"For, though very beautiful, with large grey eyes and the hair the colour of ripe corn, the heroine of a thriller is almost never a very intelligent girl. Indeed, it would scarcely be overstating it to say that her mentality is that of a cockroach — and not an ordinary cockroach at that, but one which has been dropped on its head as a baby."
The stereotypical assumption that blondes are dumb. Perhaps no more than a Foil to the Brainy Brunette, but can also appear as The Fool, The Ditz, or even the Brainless Beauty. Extreme cases can make her the Cloudcuckoolander. Her character is otherwise flexible; the Dumb Blonde ranges from a Love Freak, to a sweet, wholesome blonde whose lack of interest in education only shows she is more concerned about people, to a vacuous, mean-spiritedand often lazy bimbo, to The Vamp.
The Dumb Blonde may be less worldly-wise, or she may have decided to skate through life on her looks, leaving intellectual pursuits to her darker-hairedcounterpart because she does not want to spend the effort to cultivate her mind. It may be even a deliberately cultivated act, to appear in need of help before men. Whatever the reason, she tends to be scatter-brained and lacking in common sense.
While the trope is Older Than Steam it really started to become popular in the 1940s and 50s with comic books, radio and movies cementing the idea of the pretty but foolish blonde.
Very prone to subversion now, with the characters who assume the blonde is foolish paying for it dearly. This may be a form of Obfuscating Stupidity, with the blonde playing off the stereotype, or she may have both strengths and weaknesses, and the blonde hair causes characters to overestimate the weakness and underestimate the strengths.
The stereotype seems to have originated from the fact that some Caucasian children have blond hair that darkens as they grow older — and, hopefully, wiser.
Oddly enough, this trope seems to apply to bottle blondes more than natural ones. Perhaps dyeing her hair is a sign of her natural shallowness, or it's one of the ways that she tries to get out of doing any thinking, studying, or other action to develop her mind. This is sometimes referenced by another character who asks, "Has all that hair dye you use finally seeped into your brain?"
(When the blonde is innocent rather than stupid, that's Hair of Gold, Heart of Gold. When the blonde is sexy rather than stupid, that's Everyone Loves Blondes. If she is sexy and stupid, it's Brainless Beauty. And if she's in a Four-Temperament Ensemble, she's probably Sanguine.)
Male example: Gourry Gabriev of Slayers. Played with a bit, though: he isn't wholly naive, having been a mercenary in his late teens, and has sharp observation skills (as shown in revealing Xellos as a high-level demonic being), good knowledge on swordplay, and high morals. He's more airheaded in regards to common sense and is Oblivious to Love.
Also, due to his aformentioned background, he probably never had the chance to dive into magical knowledge and intensive literature, whereas Lina (from a family of sorcerers), Amelia (from a royal family that specializes in White Magic), and Zelgadis (raised by and was the follower of an extremely powerful priest) did.
Takuya from Animerica, whenever he's not being shy or Badass.
Cutey Honey is a borderline case, because she's blond only in civilian ID (and not in live action). Ditziness (and whether it's real or Obfuscating Stupidity) will also vary depending on the version of the character.
Misa Amane from Death Note. Then again, next to L or Light, pretty much anyone would look dumb by proxy.
Also, she's not so much "stupid" as "completely insane". She's fairly savvy and even cunning when she's being serious about things, but most of the time she's just too childish to be competent.
Poland from Axis Powers Hetalia is a quintessential example...he needed someone to turn the table while he was standing on it to screw in a lightbulb. He also talks like a Valley Girl and often pushes around a Brainy Brunet (Lithuania).
Played with in Hidamari Sketch: Miyako is a tall, busty blonde who often comes off as ditzy, flighty, or just plain weird, and is prone to making extremely poor decisions - but most of it seems to be the result of an extremely severe case of ADHD (which is actually presented in a surprisingly accurate fashion compared to most examples of Attention Deficit... Ooh, Shiny!). Artistically speaking, she is by far the most talented of the main characters (all of whom go to a prestigious art school, mind you), she is quite a fair bit more knowledgeable than all of them (when it comes to strange and extremely obscure trivia) and she's such an academic genius that it's heavily implied she got accepted to the school on a full scholarship (because she appears to be dirt poor) and was actually exempted from having to do the academic portion of the entry exams.
Ayaka plays with this trope in Mahou Sensei Negima!. She's a bit shallow and slow on the uptake, and quite dense when it comes to recognizing when people are in love (besides herself, of course), but actually gets good grades and is apparently a little smarter than average. This trope is than slammed to the ground and stomped on into a pulp by Evangelineand Arika.
Miria Harvent from Baccano!, dumb enough to be a poster girl.
Her partner, Isaac, would be in this too, if not for the fact that he's not blonde (we're just not sure what hair color he actually has).
Eleanor Mercer in the Hentai series Honey Blonde is an american student in Japan...who is the only one in her class who can not speak English.
Panty Anarchy, arguably. In the dub, Stocking has to correct her on the reading of "Les Diaboliques".
Excel Excel is Japanese and has no reason to be blond other than for this trope. The anime Flanderizes this in addition to giving her a lighter shade of blond than the manga, in which she's more often shown dirty to strawberry blond.
This trope is endemic in German-speaking comedy. This is possibly due to the fact that the German word for dumb, "blöd", is spoken very similar to the word "blond". And, of course, "blauäugig" (blue eyed) is used as a synonym for "naive".
This casts an entirely new light on the plan Those Wacky Nazis had for the "Master Race"...
Chanel West Coast from "Ridiculousness".
Double Subversion: a ventriloquist is performing a routine with his dummy, telling a series of dumb blonde jokes. Suddenly, a well-dressed platinum blonde business woman stands up and says "How can you judge people based on their hair color? It has no bearing on intelligence!" The ventriloquist says, "Lady, please, I just—" The blonde snaps, "You stay out of this! I'm talking to that jerk sitting in your lap!"
A subversion was submitted to and read out on the Australian show Sunrise: A blonde goes into a bank and asks for a $10,000 loan. The bank manager asks what she will submit as collateral, to which she points outside to a new-looking Rolls Royce. The bank manager, thinking he's taken a sucker, gives her the loan, then drives the car into the secure lot underneath the bank, laughing all the way. Three days later, the blonde returns, and repays the $10,000, as well as the interest, which came to $7.81. As the bank manager drove the car up to meet the woman, he asks, "Ma'am, I noticed that you have over a million dollars in personal funds, as well as over $200,000 in investments. Why would you need a $10,000 loan?" Getting into her car, the blonde replies, "Where else can I park my car for three days for $7.81, and still expect it to be there when I return?"
DC Comics example: Dumb Bunny of the Inferior Five is typical, but with superhuman strength.
Chase from Runaways is a rare male example. Karolina from the same series gets treated like she's one, but she never really does anything to earn the reputation other than be blond and not a genius.
The eponymous Cherry of Cherry Comics.
In the German comic Werner: Günter Günzelsen's first wife, featured in Ouhauerha! and Das muss kesseln!
The aptly titled French comic Les Blondes is entirely devoted to Dumb Blonde jokes, with the main character Vanessa embodying this trope.
This originally included Betty Coopers from the main Archie Comics, but with the rise of modern feminism, the writers took advantage of that to make her more distinctive from Veronica as a self-confident voice of common senseWrench Wench among a myriad of other talents.
An Australian KFC Hot and Spicy ad campaign from the 90s had customers gain the ability to breath fire after eating the spicy chicken. One commerical featured a guy tucking into a bucket of extra hot chicken while his attractive blonde girlfriend sitting beside him is completely absorbed in a very cliche sounding soap opera. Without taking her eyes off the screen she asks him what he is eating. He responds by leaning over and blowing softly in her ear causing a jet of flame to shoot straight out of her other ear. As he leans back she blinks, comments that it sounds nice and reaches for a piece herself, still without taking her eyes off the screen (see it here.)
Kaede Mizuno in A Growing Affection deliberately invokes this trope pretending to be vain, vapid, and more concerned with her looks than she really is. Not that she is not proud of her appearance, but this is mostly a ploy to get people to underestimate her.
Most likely unintentional, but Krysta from My Little Unicorn certainly does come off as one.
One of the earlier movie examples would be Jean Harlow's character, Kitty Packard, in Dinner at Eight. When she mentions to Marie Dressler's character that "I was reading a book the other day," Dressler literally stops in her tracks in astonishment.
When the main character is clothes shopping with her friends in the beginning of Legally Blonde the sales woman says to her co-worker, "There's nothing I love more... than a dumb blonde with daddy's plastic." It quickly turns out that Elle is not as dumb as she looks though.
In fact, the entire film is about Elle subverting this stereotype — while she's certainly very preppy, very feminine, and very blonde, she proves to be an extremely competent lawyer against everyone else's expectations.
Cindy Campbell in the latter Scary Movie films; she is just as dim in the first two films, but was originally a brunette.
Most of Anna Faris' roles, most recently Observe and Report, probably fall under this. At last count, she has played a dumb blonde in at least seven movies (three of them as the lead character) and a recurring dumb blonde on Friends. Faris doesn't only play ditzy blondes but she has a reasonable claim to be the (living) actress who most embodies this trope in her roles.
Subverted in Superman III. Pamela Stephenson's character displays all the traits of a dumb blonde when other people are around. When she's alone, though, she likes to kick back and read philosophy. Interestingly, the actress herself tired of playing blond comedy bimbos and is now a psychologist.
Both Pamela Anderson and Jenny Mc Carthy have had fun playing with their public image as ditzy blondes, and have played exaggerated versions of this trope in several films, including together in Scary Movie 3.
To show that this doesn't just refer to women, look at just about every role Owen Wilson has had.
The main character's college fiancée, Emily, in Definitely, Maybe doesn't know how to tell the man she cared about that she didn't want the same things as him any more so she admitted that she did it the most cowardly way possibly. Ever since then, she felt lost, especially when it came to relationships.
Tatum Riley from the 1996 film Scream falls into this category, especially during her death scene - the prime example of this being that, when confronted with the garage door as her only means of escape, she chooses to try and squeeze through the small pet-flap instead of simply lift the door and run away. And to top it all off, she doesn't even call for help until she's already trapped, with the garage door taking her upwards, moments from death!
In the novel The Godfather, Carlo Rizzi is a blond, blue-eyed Northern Italian (though he has brown hair in the film), and it is implied that his being a blond is connected with his less-than-stellar intellect.
Joy Chant's Red Moon Black Mountain features an entire race of Dumb Blondes.
Tawny the inept succubus from Succubus Dreams, the third book in the Georgina Kincaid series. Although, by the end of the book, it is revealed that at least some of her stupidity is an act.
Subverted heavily and deliberately by Dr. Sarah Winchester, aka Trigger of the Seekers of Truth; being blond himself, the author wanted to make a blond woman the most intelligent member of the team.
Inverted by Annabeth Chase in Percy Jackson and the Olympians, who is probably the most intelligent of the main characters. It's even lampshaded. Heck, every single child of Athena is a genius, and nearly all of them are blondes.
Inverted by Astrid Ellison in Gone, aka Astrid the Genius.
Lauren Mallory from Twilight is a shallow, vapid Alpha Bitch. Mike, the male blond, is a Dumb Jock who routinely skips homework and is pathetically jealous of Edward. Rosalie, the only blond female vampire who doesn't want to gut Bella (or at least refrains from trying) isn't stupid, but she's also pathetically jealous and vain. In fact, until minor characters Tanya and Kate appeared in Breaking Dawn, the only blond in the series who wasn't an idiot, evil, or at least nasty was Carlisle.
Tanya was also vilified and portrayed as shallow and vain in the narration, presumably for having a crush on the protagonist's lust interest.
Georgina Talgarth in Sorcery and Cecelia is often referred to by her cousin Cecy and her sister Kate as a peagoose. In all fairness, she never challenges that perception.
In John C. Wright's Fugitives of Chaos, a character describes a location as easy enough for Amelia — "blond brain" — to find. (He intends it as an insult; other characters have particularly marked her out as the clever one.)
Gloriously subverted by Rachel and David from Animorphs. Elfangor's Secret implies Melissa Chapman is a straight example.
In Rick Riordan's The Heroes of Olympus novel The Mark of Athena, Leo wonders where the dumb blonde type came about; ever since he met Annabeth he thinks of blondes as smart and dangerous.
Decidedly subverted by Tash Arranda in Galaxy of Fear. In the beginning of the series she's kind of naive but studious, but gradually starts adding her Force-Sensitivity to her wisdom score, and eventually takes a role quite similar to The Smart Guy. Her darker-haired Book Dumb brother, whose mechanical aptitude and better physical skills originally were more useful and then came to complement her talents, starts feeling useless and overshadowed.
In Seanan McGuire's InCryptid novel Discount Armageddon, Verity objects to being treated as stupid — yes, she's blond, but that doesn't make her a dumb blonde.
His twins Jamie and Cersei ... well, I guess someone has to perpetuate the stereotype. It later turns out that Jamie is smarter than he appears to be at first; Cersei, not so much.
Harry Potter's cousin Dudley Dursley, though his hair is almost black in the movies.
Inverted by Laeshana in The Quest of the Unaligned. Even among aeshes (whose secondary power is essentially a burst of superhuman knowledge about something they've been considering), Laeshana is brilliant. At the beginning of the story, she suspects that the theory of magic everyone's followed for the past eight hundred years is missing some major components. By the end of the story, she's been proven right.
In American Psycho, all the blondes whom Patrick Bateman interacts with are as vapid and stupid as the rest of his friends, Evelyn and Courtney, primarily. Also, three models (Libby, Daisy and Caron) Patrick and his associates mingle with in a nightclub. In the book, when they're asked to name any of the planets, two guess the Moon, and the third one guesses Comet. In the film at least, this is deconstructed with one of the models lamenting this and saddened by how Bateman sees her as nothing but a brainless squeeze, suggesting there is more to her character, but she doesn't mind because she thinks Patrick is actually a nice person.
Live Action TV
Chanel's only role on Ridiculousness is to blurt out Non-Sequiturs for Rob and Steelo (and the audience) to laugh at. She's also there, like us, to giggle fiercely at the people getting hurt.
Subverted in that she gets a scholarship to a prestigious university at the end of season 4, while Miley fails to get in (though it's due to Miley's lack of participating in extracurricular activities, which she was unable to attend due to having to work as Hannah Montana). Lilly might have her ditzy moments, but academically is of at least average intelligence.
Ginger Fox: Well, I didn't know if you mean o'clock AM or o'clock PM.
Sam: You're o'mazingly stupid.
Ginger Fox: What did she say?
In the first season, Carly's friend Sam was cast as a dumb blonde like when, in iWin a Date, Carly is telling Shannon everything and Sam still says "Shhh. It could still work," but as time went on, she became more lazy and less stupid.
The show set out to subvert this trope with the titular character; she comes off on first acquaintance as a stereotypical Dumb Blonde, but turns out to be a clever, wisecracking Action Girl. On the other hand, many of the villains and minor characters (most notably Harmony) played the trope straight; and Buffy herself, though savvy and intelligent, was a mediocre student (of course, she never had much time to study) and not nearly as brainy as her redheaded friend Willow.
Chrissy on Three's Company. Also, Cindy, later on. Terri was more or less an aversion.
The "dumb blonde vs. smart brunette" trope is inverted in Sabrina the Teenage Witch where the blond Sabrina is an intelligent, nice Cool Loser and the infamous Alpha Bitch Libby has black/dark brown hair (though while Libby is not exactly a Brainy Brunette, she isn't particularly dumb either. She's just mean).
In one episode, a cleaning spell goes wrong, resulting in the black-furred cat Salem turning white. The response:
Also inverted in CSI: Miami, where brunette Natalia is less intelligent (relatively speaking) than blonde Calleigh.
Completely inverted in Smallville with blonde Chloe Sullivan, who is easily the smartest recurring female character on the show and one of the smartest characters overall (though this might not be saying much all things considered). Meanwhile, brunette Lana Lang is definitelyNOTbrainy (despite what the writers would like you to think).
The aversion is lampshaded when Chloe refers to herself as the "sharpest blonde you'll ever meet." However, her natural hair color was actually brown.
Sketch actress Carol Wayne specialized in playing this type on Johnny Carson's Tonight Show, as with the Matinee Lady in the "Art Fern Tea Time Movie" routines. Even on those occasions when she chatted with Johnny "as herself", she affected this persona.
Erica the biological mother of Chandler and Monica's adopted kids and Rachel's sisters Jill and Amy from Friends.
As well as Phoebe and Rachel themselves, to an extent.
On The West Wing, Lt. Jack Reese breaks a $400 ashtray (for submarines) to show Donna why it costs so much money. He wishes he hadn't done it and says to Donna (jokingly), "It's...'cause you're blond."
As that quote implies, Donna neatly and completely subverts the trope through the entire series, often entering into heady debates with her boss and winning more than half the time because of how smart Josh is about not-politics.
In That '70s Show, Laurie Foreman is a dumb blond; might also be considered the skanky blonde.
There was also Midge Pinciotti and Annette, played by guest star Jessica Simpson.
Cheyenne and Barbra Jean from Reba both have plenty of "blonde" moments, though Cheyenne is pretty smart most of the time, whereas Barbra Jean embodies this trope to the point where most of the characters (usually Reba) make fun of her craziness and lack of intelligence.
In The Suite Life of Zack and Cody, this trope was deliberately subverted as Ashley Tisdale was asked to dye her natural brown hair blonde so they could provide an inversion of the Dumb Blonde, Smart Asian stereotypes. As such, London embodies every characteristic of the dumb blonde apart from the actual hair color while Maddie is a good student, very logical, and has the most common sense out of all the characters. One episode featured an alternate reality where things in the hotel were swapped around with Maddie being the heiress and London being the candy counter girl. Here, the trope was played straight with Maddie.
Also is played straight with Zack but subverted with Cody.
Actually it's made pretty clear that Zack's bad grades in school come from just simple laziness and if he focused like Cody he would get just as good grades.
Bridget in 8 Simple Rules. She has quite a few ditzy moments, such as Kerrie banging on the table and Bridget answering the door to find nobody there and remarking that it keeps happening. Bridget is shown to be quite a capable girl when it comes to things she's interested in, such as fashion and boys, but she's definitely a little spacey.
Phoebe in Charmed went blonde in the third season and, while she was already a bit of a ditz, whenever she had a moment, Prue or Piper would call attention to her being a blonde. Paige - the ditziest of the sisters - went blonde in season 6, but nobody ever referenced it.
Billie sometimes uses Obfuscating Stupidity but, like Bridget above (played by the same actress), is shown to be capable enough.
A season 6 episode had three evil blonde witches who were completely dim. Their entry in the Book of Shadows said there was no need to vanquish them because of how incompetent they were. One of them was indeed played by Jenny McCarthy
Terri on Glee, as well as her sister Kendra. The other main blond characters, Sue and Quinn, meanwhile, have fairly normal intelligences. However, all of them follow Blondes are Evilto various degrees
Brittany had difficulty finding her right arm...
What, you mean the square root of 4 isn't rainbows?
And then there's that one time where she took all of her antibiotics at once and couldn't leave the choir room...
Everyone thought Brittany went on vacation during the summer, but she was actually lost in the sewers.
Brittany thinks her cat is reading her diary.
She also got mad at it when she thought it had started smoking again.
Brittany doesn't brush her teeth and instead rinses her mouth out with Dr. Pepper because she thought he was an actual doctor.
She doesn't know how to read a calendar.
Will had to teach her the second half of the alphabet because she felt M and N were too similar and got frustrated.
More examples of Brittany's dumb blondness can be found here.
An Alternate Character Interpretation of Brittany is that she's not actually dumb, she's completely insane and everything she does and says would make perfect sense if you were under the same delusions that she is. This interpretation is the one held by Heather Morris, the actress who plays her.
Played oddly straight (though possibly accidentally) on Robin Hood with the Too Dumb to Live Kate. Even more strangely, the actress was a natural brunette. For them to have actually dyed a woman's hair in order to make her a blonde, and then portray her as such an idiot that there was serious fan speculation that she had a mental disorder, led to several Unfortunate Implications.
But also several moments of unintentional hilarity: when the outlaws are about to be burnt at the stake, an angry crowd begins chanting "burn them, burn them!" Kate joins in, but is slightly out of sync. Obviously two whole syllables were a bit much for her.
Inverted on All in the Family, where blonde Gloria is very smart and her brunette mother Edith is a scatterbrained dingbat.
Dick Casablancas is pretty much the epitome of a male dumb blonde.
Angelina, the season 5 winner from Canada's Worst Driver. Any of the contestants with yellow hair could apply due to shocking ignorance about simple rules of the road, but how else do you describe someone who doesn't know how to get the gas cap off? Yes, that was shown, and yes, the door over the cap was open. She returned for the all-star season 9 along with season 6 runner-up Dale, with neither one having gotten any better.
Detective Ishihara of Trick is this in spades. The man is so off his rocker that he would have trouble holding down a job at McDonald's, let alone become a detective with the Tokyo police, even if he's in a comedy series. Then, in the season 2 finale, when the cast goes to a forest that makes hair grow, his natural black hair grows back, displacing what must be gallons of bleach, and he not only becomes competent, but downright intelligent. One can only imagine he started bleaching his hair after becoming a detective...
Both inverted and played straight with the titular characters on Hope And Faith. Hope is blond, but has the most common sense out of anyone, Faith, on the other hand, fits the stereotype perfectly as she's so dense at times that she almost steps over the line into being an extreme ditz. She's also a bit of a Cloudcuckoolander.
Taken to its logical extreme on Arrested Development when Micheal romances a beautiful blonde who, unbeknownst to him, is actually mentally handicapped.
In season 1 of Degrassi, Emma Nelson, while book smart, was introduced as lacking common sense and went on to be scatter-brained on multiple occasions and was always so narrow minded that she, in Sean's brother's words, would not understand that there are two sides to every story.
Quendra on Community. It's made abundantly clear Jeff wants her in the study group only for her physical attributes.
Inverted in Gilmore Girls with the intelligent and ambitious Paris Geller, who was played by actress Liza Weil who actually dyed her hair blonde to underline her character as a foil to Rory Gilmore, who, interestingly, is herself a Brainy Brunette.
The producers of The Amazing Race manage to cast at least one ditzy woman in most seasons. They are usually, but not always, blondes:
Subverted in Season 10, where the team of Dustin & Kandice, a pair of Beauty Queens (Miss California and Miss New York respectively), were immediately dismissed by everyone (fans and other teams) as dumb blondes, but then ended up being one of the most feared teams to ever run the race and even dominated a large portion of the All-Star season.
Subverted again in Season 17, with Brook, who, along with brunette Claire, were considered an airhead fodder team pre-race, but finished 2nd overall behind Doctors Nat (who was also blonde) & Kat.
Penny from the Big Bang Theory is one of these my comparison. She's not dumb (although she was in the pilot but that's pure Early-Installment Weirdness), but is the only person of "normal" person amongst a group of friends that aside from her consists of all scientist. Not at all helped by the fact she frequently takes on the role of The Chick and enjoys reality TV. Subverted by Bernadette whom has a very Kawaii Ko personality and occasionally comes across as slightly dense, but earns her degree in Microbiology over the course of the show.
Jools from Faith in the Future is a rare male example.
Amber from House of Anubis tends to lean towards this trope, though it's shown that she IS pretty smart when it counts, and has come up with many ideas including the formation of Sibuna itself. She might be a case of Brilliant but lazy or more likely the Genius ditz as she is shown to be very skilled in fashion and often mystery related topics as well.
Mick also counts as this, but it's shown that he does have the ability to be smart and he does try, he just struggles academically. When he does get help, his grades go up by a lot.
Poppy on Frasier. Unusually for the trope her defining character trait is being an irritating Motor Mouth - her being stupid is incidental.
Mad Men: Meredith, the SCDP/SC&P receptionist starting in Season 5, seems to have all the awareness and intelligence of a cinder block.
Jill Monroe in Charlie's Angels, particularly in early episodes. Although attempts are made to avert this by having Jill display unexpected insight and knowledge, there are still moments like in "Night of the Strangler" where Jill, for no reason whatsoever, asks about a suspect's astrological sign in the middle of a mission briefing (the same episode includes a joke that she's taking memory classes because she keeps forgetting things; Jill says she forgot to take the class). Jill (and her successor, Kris) also play up the stereotype as missions demand, as do (very rarely) Sabrina and Kelly as they attempt a "dumb brunette" variant.
In Noob, Valentin, the dumb Casanova Wannabe happens to be blonde. Likely done on purpose considering the guy playing him in the webseries version is actually dark-haired and wears wig for filming.
Julie Brown's "'Cause I'm a Blonde".
I just want to say that being chosen as this month's Miss August is like a compliment I'll remember for as long as I can. Right now I'm a freshman in my fourth year at UCLA but my goal is to become a veterinarian 'cause I love children.
Hoku's "Another Dumb Blonde"
Dolly Parton has been quoted as saying that dumb blonde remarks don't bother her, "because I know I'm not dumb...and I also know I'm not blonde."
When Jillian Hall was in Ohio Valley Wrestling, she got breast implants and turned into a dumb blond, the storyline being that her implants leaked and the silicone went straight to her brain.
In GLOW, the California Doll was portrayed as one of these.
The Trope Codifier for the beautifulDumb Blonde might have been the enormously popular late 1940s/1950s radio sitcom My Friend Irma starring Marie Wilson as the very pretty but oh so dim Irma. The series would spin off into feature films, a television series in the early 1950s and a long running comic scripted by Stan Lee!
Holly from both the movie and musical versions of The Wedding Singer is both slutty and slightly dim, if sympathetic. However, in the original movie, Julia herself was intelligent in contrast to Robbie's stupid brunet ex, Linda. The musical reverses Julia's and Linda's hair colors, with Julia a Brainy Brunette/Girl Next Door type and Linda an even bigger Dumb Blonde than Holly, and dabbling into Blondes are Evil.
Glinda from Musical/Wicked fits this trope, at first anyway. When Elphaba writes home and tries to find a word to describe her room-mate, all she can come up with is "blonde".
In the song "Popular", however, she explains how her persona is actually hugely helpful, showing the first glimmer of how sharp her mind really is, which serves her well over the rest of the story's course.
Its not about aptitude/Its the way you're viewed
So its very shrew to be/ Very very popular like me!
Kendra from 13 trusts people like Lucy way too much, which leads to her downfall near the end of the show.
Leave it to Warhammer to make a Darker And Grittier example of the Dumb Blonde. In this case, it's a male Chaos Champion named Sigvald the Magnificent. The guy is a magically beautiful, blonde mutant who is into every and any form of debauchery. The dumb part comes from him having the Stupidity rule, which is something that's usually associated with mindless creatures (even low IQ creatures like Orcs and Ogres don't get that). In Warhammer, stupidity means you can be so stupid that you'll actually stop moving or fighting in the middle of a pitched battle.
Viva Pinata has an item called the Weathergirl Wig. It's a blond wig. The description says, "It decreases the wearer's intelligence by 50%, but apparently, [blondes] do have more fun."
Berri the Chipmunk, Conker the Squirrel's girlfriend from Conkers Bad Fur Day, was a stereotype of this trope. She couldn't recognize Conker when all he was wearing was a caveman's hat. She does disable an alarm system toward the end of the game, though I think it was part of the Matrix parody heist level; she and Conker were the only two in the room at the time to use for the cutscene.
Candy from Space Colonyticks all the boxes. Blonde? Yep. Cheerleader? Apparently. Obsessed with shopping? Yes. Dumb? Definitely.
Rock from Harvest Moon. He's, well, dumb as a rock. Muffy may count at times, but she's more naive than dumb.
Cassandra in the Soul Calibur series behaves in a slightly ditzy, clumsy, and purportedly cute manner. Her just as blonde older sister Sophitia, on the other hand, is quite a bit less silly...and also an Action Mom.
Tess from Jak and Daxter acts like a typical ditzy yellow-haired bimbo, but she is a genius when it comes to building weapons.
Only female blonde. Of course, Corgan isn't particularly dumb either. The Chosen princess toys with this, though.
Male example: Daisukenojo "Beat" Bito from The World Ends with You. One particular example of this comes up when he helps Neku out despite being a Reaper. When Kariya says that he is walking on thin ice, his response? "Shibuya ain't cold for ice, stupid!". Also, he doesn't realise that other characters are insulting him and mistakingly takes it as a compliment until Neku points it out, causing him to be genuinely shocked.
In Corruption Of Champions, drinking Bimbo Liqueur will turn you into one. It's also possible to use Bimbo Liqueur to turn various NPCs, for example Rubi and Sophie, into Bimbos.
Dragon Age: Origins: King Cailan, while not exactly dumb, comes off as naive and overly idealistic at Ostagar, and Loghain has to handle the tactical planning for the battle. His snarkier, more down-to-earth half-brother, Alistair, is basically a Palette Swap with light brown hair and hazel eyes. His wife Anora very, very, very much averts this.
Noel Vermillion from BlazBlue combines this with Hair of Gold, Heart of Gold and, strangely enough, Fiery Redhead. While she's the most emotional of the Three Stooges of Torifune, she has to study extra hard to keep pace with her friends, and even then she tends to run on her impulses instead of thinking things completely through. Needless to say, this causes problems, and JinKisaragi doesn't help at all. But let's be fair to Noel; she's only five.
CLANNAD: Youhei Sunohara arguably counts as a male example. Then again, he dyes his hair from its natural onyx to bright blond. When NOT blond, he is actually a very positively received person, but serves as the Butt Monkey most of the time WHEN blond.
Barbie in Barbie: Life in the Dreamhouse is often depicted in the airhead stereotype, but given the metafictional aspects of the series (the characters know they're dolls, for example) this falls closer to the lampshading side of things.
Carol in Suburban Tribe is actually a dumb redhead, but because most of the comics are uncoloured, many new readers mistake her for a blonde. This has been lampshaded.
Kim of Kim & Jason may qualify, as despite being 4 years old, she once ran a presidential campaign with a toy skunk as her running mate.
Gertrude from The KA Mics, although Word of God is that if he knew she would end up that dumb, he would have given her another hair color.
Susan of El Goonish Shive is a heavy inversion. She is a natural blonde who dyes her hair black/blue/some dark colour and is, in fact, one of the smartest and most sensible people in the comic.
However, a side character named Sandi is a straight example. The author has said that he doesn't feel particularly guilty about having her fit all the ditzy blonde stereotypes because she always seems to appear around perfectly intelligent blondes.
Diane is a natural blonde and although a bit shallow and snooty, is clearly not dumb. Being Susan's Separated at Birth identical twin sister might have something to do with it.
Inverted humorously in an early The Wotch arc. A blonde schoolgirl complains about all these "blonde jokes" to her (also blonde) friend and wishes that the non-blondes would be the stupid ones. She says this within earshot of a genie who's currently unable to not grant any wishes she hears. Ironically, this happens just as Anne (the Redheaded Hero) has found a way to stop the mayhem...which she promptly forgets. Even further, Robin wishes to gain powers like Anne has to fix things, except her powers require she be a girl, also making him/her become a bimbo. Jason saves the day by wishing specifically to become a blonde.
In the Order of the Stick strip The Start of Darkness, when Xykon throws Lirian to the brain-eating zombies, he says that, being a blonde, she might not have brains enough for them.
Elan would be a rare male version of the trope (a Dumb Blond).
Also, see the time he tried to cover up for having knocked out Lars. He claimed that Lars had been hit by a falling brick and supported his argument by holding up a brick on which were written the words "I Hitt Mr Larz (Syned) A Brik".
In all fairness, he's not like that because he's a blonde, he's like that because he's a Jager.
In all fairness, his two constant companions are also Jaegers, and though they have their moments, they find him idiotic enough to remark on it often.
Survival of the Fittest: Charlene Norris is a blonde and noted to not be particularly intelligent, having needed tutors to pass classes at all before (out of both said lack of intelligence and partying all night). She also has been shown to make very unwise decisions on occasion.
Brittany from Daria, although she is smarter than her Dumb Jock boyfriend, Kevin. (He's a brunet, for the record.) Brittany's stepmother Ashley-Amber as well, though a tie-in book mentions she's managed to learn joint-property laws without her husband knowing.
In Kick Buttowski, Gunther Magnuson is helpful but easily distracted and confused.
In Kim Possible, Ron Stoppable is a variant. No, he's not nearly as intelligent (or coordinated) as his best friend/girlfriend, but he is at times remarkably Genre Savvy and resourceful. He's also a Supreme Chef, which requires brainpower.
Luann Platter, Hank and Peggy's niece from King of the Hill. Though she didn't start off like that. And also Didi Hill.
Nurse Bendy from Moral Orel shows a more depressing side to the stereotype in Season 3, which reveals that she's often mistreated (not to mention being possibly sexually abused) for being a pessimistic dumb blonde. It isn't until she is reunited with her equally unintelligent son, Joe, that she finally finds someone who accepts her for who she is in quite a heartwarming fashion.
Although when she met her son, she told him she dyed her hair - it's really black like his.
Applejack from My Little Pony: Friendship Is Magic is a kind of this. She's not by all means completely stupid, but she does have her moments, like whern she thought Big Macinotsh's math metaphor was using actual mathematics. Not the dumbest pony out there, but a bit spacey at times, especially compared to not only her brother but also her younger sister, who's The Smart Guy of the Crusaders. Of course, she can't compare with Derpy, who is not just dumb, but also very klutzy and accident-prone. It just makes her all the more charming.
The titular star of Pearlie. Though she isn't dumb, but pretty gullible and optimistic.
The Trope is Lampshaded by Harley Quinn in one episode of Batman: The Animated Series, who denies being a dumb blonde, even telling Batman, "I'm not even a real blonde!" (Indeed, there are times when Harley seems to be Obfuscating Stupidity at least a little, and both fans and writers were originally divided on whether she earned her psychology degree or cheated her way through school in order to get it. Eventually, in her own series they settled on the former.)
Bart Simpson of The Simpsons, but at least he has an excuse. He has the Simpson gene, which makes all Simpson males stupid with age.
Inverted with Lisa, but one episode Played With the idea—she joined the debate team, but nobody treated her seriously because of this trope.
Played straight with "Miss Springfield", Mayor Quimby's recurring mistress.
Stella in Winx Club isn't that stupid, but she is shown to be really thick at times, and it is mentioned several times that she always gets the lower grades at school. It's implied that this is more due to her not taking her schoolwork seriously rather than that she doesn't know it.