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[[caption-width-right:300:"Diamonds are a girl's best friend"]]

''Gentlemen Prefer Blondes'' was a 1925 novel written by Anita Loos. It was adapted into a Broadway musical in 1949; the songs (written by Jule Styne and Leo Robin) included "Little Rock" and "Diamonds Are A Girl's Best Friend." The musical version was adapted into a movie in 1953, starring JaneRussell and MarilynMonroe. (An earlier silent movie version is lost.) A semi-sequel, ''Gentlemen Marry Brunettes'', was released a couple of years later starring Russell and JeanneCrain; it didn't do nearly as well as the first movie.

The story follows two showgirls, and best friends, Dorothy Shaw (JaneRussell) and Lorelei Lee (MarilynMonroe). As it starts off Lorelei and her fiance, Gus Esmond, were going to travel to France in order to get married. However, since Gus's father, Edmond Sr., disapproves of Lorelei, he prevents them from going. Despite this, she decides to go anyway, taking Dorothy along with her. Before their trip, Gus tells Lorelei to behave herself while in France or his father might find out and prevent their marriage from even happening. This is not untrue as the old man has hired a detective, by the name of Ernie Malone, to watch her every move.

While on the boat to Paris, Lorelei meets Sir Francis "Piggy" Beekman, owner of a diamond mine. Intrigued by him, she invites him back to the girls' cabin to flirt with him. Unbeknown to them, however, Ernie spies on and takes pictures of them. Dorothy, who Ernie is falling for, sees him and tells Lorelei. They concoct a scheme to take the film by drugging the detective and stealing it from him. However, their troubles are not over yet as the two girls soon run into money problems...

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!!This work provides examples of:

* AlliterativeName: Lorelei Lee.
* CassandraTruth: When Gus introduces Lorelei to his father, he has trouble believing that she's the Lorelei Lee that Gus wants to marry, since he had previously mistaken a disguised Dorothy for her. Lorelei verifies her identity by pointing at her picture on a cardboard standee for one of their shows.
* {{Catchphrase}}: Lorelei: "...a girl like I..."
** In the film: "Thank you ever so!"
* CostumePorn: Lorelei wears a spectacular 1950's-style strapless pink gown (with matching long gloves) during the iconic "Diamonds Are A Girl's Best Friend" number, and both Lorelei and Dorothy wear chic, high-fashion 1950's-style outfits throughout the film.
* DeadpanSnarker: Dorothy, in the best kind of fast-talking 50's manner.
* DumbBlonde: Well, somewhat. Lorelei ''does'' say some spectacularly ditzy things and she's plenty shallow but she can be incredibly crafty, at least when it comes to manipulating people. She's about 40% DumbBlonde, 40% ObfuscatingStupidity and 20% GeniusDitz.
* EveryoneLovesBlondes: Duh.
* EverythingsBetterWithSparkles: Several of the girls' non-diamond-inlaid outfits are still pretty glittery.
* EverythingsSparklyWithJewelry: "Diamonds are a girl's best friend."
* GoldDigger: Lorelei's principal attribute.
* GlobalIgnorance:
-->'''Lorelei:''' Excuse me, but what is the way to Europe, France?
-->'''Dorothy:''' Honey, France is in Europe.
-->'''Lorelei:''' Well, who said it wasn't?
-->'''Dorothy:''' Well... you wouldn't say you wanted to go to North America, Mexico.
-->'''Lorelei:''' If that's where I wanted to go, I would.
* JerkAss: Lorelei has her moments, due to her unapologetically GoldDigger attitude to men.
* KarmaHoudini: Lorelei Lee
* MenUseViolenceWomenUseCommunication: the plan Dorothy and Lorelei use to get the film from Mr Malone.
-->'''Dorothy:''' If we can't empty his pockets in ten minutes we're not worth-ee of the name 'woman'.
* NotDistractedByTheSexy: "Ain't There Anyone Here For Love" has Jane Russell, in a low cut top, with a bunch of half-dressed guys at the gym who steadfastly ignore her. ''TheCelluloidCloset'' presents this as a textbook case of GettingCrapPastTheRadar, and offers [[CampGay an]] [[IncompatibleOrientation alternate]] [[SorryImGay reason]] why she's ignored.
** Though considering the men all couldn't get enough of her the first night in her room and again at dinner, this would suggest [[BiTheWay another trope]].
* NudeColoredClothes: The athletes in "[[http://youtu.be/pthokb18V7U Ain't There Anyone Here for Love]]?" and if it weren't for the black lines you might think they were doing it in the buff. [[GettingCrapPastTheRadar This was almost definitely intentional]].
* ObfuscatingStupidity: Lorelei is really good at playing the part of DumbBlonde but she does have some brains to her, like when Dorothy needs a moment to realise Lorelei has the room overheated for a reason.
-->'''Lorelei''': I can be smart when it's important, but most men don't like it.
* OperaGloves
* PinkMeansFeminine: Lorelei wears a pink dress for the "Diamonds" number.
* PrettyInMink: Several, starting with ermine coats the girls are holding in the first scene.
* ProperLady:
-->'''Lorelei:''' Please dear, a lady never tells that her feet hurt.
* SomethingBlues: "Homesick Blues"
* ThatRemindsMeOfASong: When Lorelei gets put on trial for taking Piggy's wife's diamond tiara, Dorothy disguises as Lorelei and takes her place in the courthouse. One of Dorothy's airheaded actions involves asking a juror if he's had the pleasure of hearing her sing. After he says that he hasn't, she breaks out into a reprise of "Diamonds are a Girl's Best Friend" to show herself off.
* TheUnfairSex: The film seems to side with Lorelei over Mr. Esmond for cancelling the girl's credit and rescinding their hotel reservation, even though the reason why this happened was because she was blatantly flirting with another man in order to take something that wasn't hers.

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