[[quoteright:325:[[Series/{{Glee}} http://static.tvtropes.org/pmwiki/pub/images/Glee-Kurt-young-actor_400_723.jpg]]]]
[[caption-width-right:325:Adam Kolkin and Creator/ChrisColfer. No, they're not related.]]

Sometimes, casting directors are called upon to cast, say, a father and son, or two brothers, or a younger and older version of the same character. And sometimes, they find someone that looks so uncannily like the original actor that it comes as a surprise to the viewers that the two aren't actually related.

Not to be confused with RealLifeRelative, which is when the actors actually are related, either by blood or marriage, and not necessarily playing relatives.


[[folder: Advertising]]
* In the Kia commercials with Blake Griffin {{time travel}}ing to his childhood selves, the childhood versions of him look a lot like him. This is especially strange because Blake Griffin is somewhat of an unusual looking person, being a biracial guy with brownish red hair and freckles.

* In ''Film/BigFish'', [[http://images2.fanpop.com/images/photos/7400000/Alison-Lohman-Big-Fish-screencaps-alison-lohman-7479979-1016-570.jpg Alison Lohman]] was cast (assisted by makeup) as the young version of [[https://pbs.twimg.com/media/B0BRlteCcAE1GNj.jpg Jessica Lange]].
** Supposedly, Creator/EwanMcGregor was cast by Creator/TimBurton because he uncannily resembled Albert Finney when he was younger.
*** By [=McGregor=]'s own recollection he saw a photo in Tim Burton's office of [[http://www.imdb.com/name/nm0001215/mediaviewer/rm1145289472 Albert Finney in ''Tom Jones'']] and was trying to remember which photoshoot of his it was taken from before he realised that it wasn't a photo of him at all.
* [[Series/{{Blossom}} Mayim Bialik]] as the younger version of Bette Midler's character in ''Beaches''.
* Creator/HarrisonFord recommended Creator/RiverPhoenix for young Indiana Jones in ''Film/IndianaJonesAndTheLastCrusade'' specifically because he reminded him of himself at that age. It helped that they previously played father and son in ''Film/TheMosquitoCoast''.
** Although it's generally a good idea to have stunt doubles resemble the actors they replace, Harrison Ford's stunt double, Vic Armstrong, looked so much like him that the two were often confused on-set, even by Ford's own son. At one point while filming ''Film/IndianaJonesAndTheTempleOfDoom'', Ford injured his back and was out of commission for a few weeks, so Armstrong filmed in place of Ford for several scenes during that time that didn't show his face. Close-ups of Ford were added later to make it more convincing.
---> ''"Vic -- If you learn to talk I'm in deep trouble!"'' (Ford's dedication to Armstrong on a photo depicting both of them during filming ''Indiana Jones'')
* Creator/RachaelLeighCook as the young Creator/ParkerPosey in the movie adaptation of ''Film/TheHouseOfYes''.
* The boy chosen to be a young Creator/JohnCusack in ''Film/HotTubTimeMachine''.
* ''Film/TenaciousDInThePickOfDestiny'': Young [[Creator/JackBlack JB]]. The same actor played a young Jack Black in ''Film/NachoLibre''
* ''Franchise/StarWars'':
** Although he's an extra in ''Film/RevengeOfTheSith'', Tarkin appears largely due to the fact that they found an actor (Wayne Pygram, most well known as Scorpius from ''Series/{{Farscape}}'') with an astonishing resemblance to Creator/PeterCushing and couldn't bear to ''not'' cast him!
*** Similarly, actress Genevieve O'Reilly was cast as Mon Mothma in both ''Film/RevengeOfTheSith'' and ''Film/RogueOne'' due to bearing a striking resemblance to Caroline Blakiston, the actress who portrayed Mon Mothma in ''Film/ReturnOfTheJedi''. Sadly, as her speaking role in ''Sith'' was cut, making her an extra. Fortunately her role in ''Rogue One'' was larger.
*** Also in ''Film/RogueOne'', [[http://www.followingthenerd.com/site/wp-content/uploads/guy-henry-tarkin.jpg Guy Henry]] was cast as Grand Moff Tarkin, with Creator/PeterCushing's likeness digitally recreated for the finished film.
** Also from the prequels, ''Film/ThePhantomMenace'' would just have Creator/NataliePortman ActingForTwo. Then they discovered Creator/KeiraKnightley and [[http://static.tvtropes.org/pmwiki/pub/images/rsz_natalie_vs_kiera_4928.jpg put her as the queen's decoy.]] Supposedly, even their own mothers couldn't tell them apart with the makeup on.
** All potential actors for Obi-Wan in the prequels had their pictures compared with young Creator/AlecGuinness. Of course Creator/EwanMcGregor fit this even more once [[http://l.yimg.com/ea/img/-/121108/obi_wan_kenobi_ewen_mcgregor_alec_guinness_189mjpd-189mjpv.jpg?x=450&q=80&n=1&sig=NUPvC5zFG6ck_nuJxO7E6g-- he had to grow Obi-Wan's beard.]]
* Speaking of ''Star Wars'' actors, Creator/HarrisonFord's TimeShiftedActor younger self, played by Anthony Ingruber, in ''Film/TheAgeOfAdaline'' bears a truly ''insane'' amount of resemblance to Harrison Ford to the extent that some people were convinced Harrison Ford dubbed his younger voice (He didn't.) As a matter of fact, Anthony Ingruber seems to have made a ''life'' out of looking like Harrison Ford, and he's damn good at it.
* In ''Film/TheLegendOfBillieJean'', Creator/ChristianSlater and Creator/HelenSlater play teenage siblings. With their blond hair, grey-blue eyes, peaches-and-cream complexions, and identical last names, coupled with the fact that both actors were relative unknowns at the time, it was unsurprising when many moviegoers assumed they were real-life brother-and-sister.
* Creator/MilaKunis portrays a young Creator/AngelinaJolie in ''Film/{{Gia}}''. It's downright freaky.
* While filming ''Literature/WaterForElephants'', actor Hal Holbrook (who plays an older version of the character Jacob Jankowski) came up to Creator/RobertPattinson and told him "My God, you look like me as a young man!"
* Aside from the various wigs and prosthetics, both Creator/OrlandoBloom and Lee Pace have strikingly similar facial features, so this is definitely the case in ''Film/TheHobbit'' films.
* In ''Film/NeverLetMeGo'', the kids who play the young versions of Kathy, Ruth, and Tommy look eerily like the older actors, [[http://www1.pictures.zimbio.com/gi/Never+Let+Go+Premiere+54th+BFI+London+Film+luwIJsCErmZx.jpg particularly]] Isobel Meikle-Small as a younger Creator/CareyMulligan and Ella Purnell as a younger Creator/KeiraKnightley.
* ''Film/{{Thor}}'':
** Dakota Goyo and Ted Allpress, who play Thor and Loki as children respectively, really do resemble Creator/ChrisHemsworth and Creator/TomHiddleston.
** While it's not obvious at first glance due to the heavy Frost Giant make-up and prosthetics, the filmmakers made an excellent choice casting Creator/ColmFeore as Laufey because his [[http://media.tumblr.com/8daa12ca92ffb26d55393e74c6ba41cf/tumblr_inline_mwfa6q5TU91qcbgrk.jpg facial bone structure is virtually identical]] to Creator/TomHiddleston's (Loki is Laufey's biological son).
* Creator/ReubenLangdon has been Creator/GideonEmery's stunt double on multiple occasions, such as in the movie ''Film/{{Takers}}''. They look like they [[http://justanotheractorinla.blogspot.com/2008/10/real-doppelganger_8876.html could be twins!]]
* Christa B. Allen looks so much like a young Creator/JenniferGarner that she has played a younger version of her in two movies, ''Film/ThirteenGoingOnThirty'' and ''Film/GhostsOfGirlfriendsPast''.
* Creator/JoshBrolin as a young Creator/TommyLeeJones in ''Film/MenInBlack3''. He even copied Jones' voice to an uncanny level. Also Agent O, who is played by Creator/AliceEve as a young woman and Creator/EmmaThompson as the head of MIB.
* ThoseTwoGuys who played the part of young Creator/JimCarrey and Jeff Daniels in the ''Film/DumbAndDumber'' prequel.
* ''Film/StarTrek'':
** Creator/ZacharyQuinto was said to [[http://i.imgur.com/kdu5a4t.jpg look like]] a young Creator/LeonardNimoy, so it was hardly a surprise when he was cast as Spock. In fact, Creator/JJAbrams [[http://www.ew.com/article/2013/05/15/leonard-nimoy-zachary-quinto-spock-star-trek said that]] at the Comic-Con panel where the two first met, Leonard's wife had found the resemblance "creepy".
** Creator/ChrisPine, who played James Kirk, and Creator/ChrisHemsworth, who played his father George towards the beginning, looked so much alike that according to Abrams, some viewers mistakenly believed Pine played both characters.
* Kimberly Elyse and Cicely Tyson as Helen & Myrtle in ''Film/DiaryOfAMadBlackWoman'' are this.
* Creator/JenniferLawrence and Creator/JuliaStiles as sisters in ''Film/SilverLiningsPlaybook''.
* Benjamin Walker (of ''Film/AbrahamLincolnVampireHunter'' fame) played a teenage version of Creator/LiamNeeson in ''Film/{{Kinsey}}''. The resemblance is uncanny.
* Creator/JuliaRoberts and Creator/KyraSedgwick as sisters in ''Something to Talk About''.
* David Wenham and Creator/SeanBean as brothers Faramir and Boromir in ''Film/TheLordOfTheRings''.
* In ''Film/{{Stardust}}'', [[http://www.imdb.com/media/rm4140468480/nm1602660 Ben Barnes]] plays [[http://www.imdb.com/media/rm4058487040/nm0662511 Nathaniel Parker's]] younger self.
* Jake Abel and Creator/BoydHolbrook as Ian and Kyle O'Shea in ''Film/TheHost''.
* Creator/VinceVaughn and Creator/VincentDOnofrio have been mistaken for each other for years, so it naturally made sense to cast them as brothers in Vaughn's film ''Film/TheBreakUp''.
* In the DVD commentary for ''Film/ThePerksOfBeingAWallflower'' writer/director Stephen Chbosky said he made a conscious effort to cast members of his protagonist Charlie's family with actors that look related.
* ''Film/StuckInLove'' has Creator/JenniferConnelly as Creator/LilyCollins's mother.
* Dave Stevens drew himself as the face of the Cliff Secord, the Rocketeer, in the comic book of that title. For [[Film/TheRocketeer the film adaptation]], Bill Campbell, who was cast as Cliff, bore such a resemblance that Stevens' friend HarlanEllison said [[http://www.youtube.com/watch?v=nMnDPVWW1sw "It was uncanny, he could have been Dave's brother."]]
* Hugo Blick as Jack Napier aka "Young [[ComicBook/TheJoker Joker]]" in ''Film/{{Batman}}'', apparently [[http://www.batman-online.com/features/2009/4/24/hugo-blick-interview-young-jack-napier#sthash.5W94Ry3P.dpbs following a recommendation]] by Creator/JackNicholson himself.
* Creator/JossWhedon's film version of ''Film/MuchAdoAboutNothing2012'' casts Creator/AmyAcker as Beatrice and Jillian Morgese as Hero, who really do look alike enough to be first cousins. Whedon mentions this himself on the audio commentary as a factor that influenced his casting choices.
* A surprising number of fans ''thought'' this was the case for Jared and Simon in ''Film/TheSpiderwickChronicles''. Creator/FreddieHighmore plays both but gives them distinct differences in behaviour and voice, as well as noticeably different appearances. When the film was released, cue a large number of message board topics about how they didn't realise they were both played by him. Truly a HeReallyCanAct moment for Highmore.
* For ''Film/InAmerica'', Creator/SamanthaMorton plays Creator/SarahBolger's mother. The two both have extremely similar bone structure, nose shape and colouring. In fact, now that Bolger is older, she resembles Morton even more.
* In the 2005 adaptation of ''Film/PrideAndPrejudice'' Creator/JenaMalone and Creator/CareyMulligan play younger sisters Lydia and Kitty respectively and have very similar nose shapes and lips. This is helped by similar hairstyles and mannerisms by the actresses. Creator/TalulahRiley as Mary looks quite like a combination of Malone and Creator/KeiraKnightley who plays Lizzie. Creator/RosamundPike however looks nothing like her on-screen sisters -- which helps that Jane is pushed as 'the pretty one' of the family.
* Simon Russell Beale was a good choice to play James Corden's father in ''Film/IntoTheWoods''.
* Creator/WoodyHarrelson and Creator/MatthewMcConaughey look very believable as brothers in ''Film/EDtv''.
* It's no coincidence that Raquel Alessi got cast as a young Creator/EvaMendes in ''Film/GhostRider''. She more than looks the part.
* Creator/MiloVentimiglia was cast to play the adult Rocky Jr. in ''Film/RockyBalboa'' largely due to his strong resemblance to Creator/SylvesterStallone and the fact that they shared the same crooked lip birth defect.
* In ''Film/PanicRoom'', Creator/KristenStewart plays the daughter of Creator/JodieFoster's character. Stewart looked like Foster when she was her age.
* Naomi Scott as Kimberly Hart in ''Film/PowerRangers2017'' has a [[http://stevenzurita.tumblr.com/post/151557760097/ striking resemblance]] to the actress who originated the role, Creator/AmyJoJohnson. They also have uncannily similar voices.
* Creator/ZacEfron and Creator/AdamDevine look extremely like brothers, with their similar hair, facial structures and height in ''Film/MikeAndDaveNeedWeddingDates.''
* As the Music/{{Queen}} biopic ''Bohemian Rhapsody'' began filming, Music/BrianMay [[https://www.instagram.com/p/BYwXAt3j0kj/?taken-by=brianmayforreal shared some Queen memorabilia recreated for the film]], and the similarities between the actors and the band members is incredible.
* Brenton Thwaites is the spitting image of Creator/OrlandoBloom and Kiera Knightley's hypothetical child. Appropriately, he plays Will Turner and Elizabeth Swan's son Henry in ''Film/PiratesOfTheCaribbeanDeadMenTellNoTales''.

[[folder:Live-Action TV]]
* On ''Series/{{Glee}}'':
** A flashback depicted Kurt as a young adolescent. The actor chosen to portray Creator/ChrisColfer's character Kurt bears an uncanny resemblance to a younger Chris Colfer (as pictured above right).
*** Adam Kolkin is set to play young Colfer again in ''Struck by Lightning''.
** The character of Shelby Corcoran (portrayed by actress Creator/IdinaMenzel) is the mother of the character Rachel Berry (portrayed by actress Creator/LeaMichele). Menzel was presumably cast due, in part, to [[http://ll-media.tmz.com/2009/09/15/0910_lea_idina-1.jpg her striking resemblance to Michele.]]
* Younger versions of Sam and Dean of ''Series/{{Supernatural}}'' [[http://images2.fanpop.com/image/photos/14400000/Weechester-the-weechesters-14402373-600-395.jpg nicknamed the Weechesters]] tend to look quite a bit like them, especially when the age gap is smaller. It's not incredibly hard to find a mop-top and [[AscendedMeme chisel-chest]], but it helps when they actually get the demeanors down too.
* The character of Niles on ''Series/{{Frasier}}'' was created after producers noticed David Hyde Pierce's uncanny resemblance to a younger Creator/KelseyGrammer.
* Creator/AntAndDec have Little Ant and Dec (their variety show ''Ant and Dec's Saturday Night Takeaway'' had trotting out "little [insert name here]" versions of various guests as a feature, including [[TastesLikeDiabetes Little Little Ant And Dec]]).
* The Mitchell brothers in ''Series/EastEnders''.
* Jamie Walters as the younger version of Dean Stockwell's character in ''Series/QuantumLeap''.
* In the made-for-TV film ''Hawking'', Creator/StephenHawking (Creator/BenedictCumberbatch) and the actors who play his parents seriously look like they could actually be related.
* Lori Loughlin and Shenae Grimes on ''Series/NineOhTwoOneOh'' play a mother and daughter that actually look alike.
* Creator/GeneWilder had a short-lived sitcom called ''Series/SomethingWilder'' in the mid-Nineties where he played father to two little boys. One of whom was virtually a miniature clone of him.
* The brothers Hank and Evan Lawson on ''Series/RoyalPains''. They're supposed to be New York Jews; while Mark Feueurstein is Jewish and from NYC, Paulo Costanzo is from Toronto and is of Italian descent.
* Malese Jow looks so much like Music/MirandaCosgrove that Malese was chosen to play [[Series/ICarly Carly's]] lookalike in "iLookalike".
** Same with JadinGould, who played the young Carly.
* Lachlan Nieboer, who played Gray, Jack Harkness's brother on ''Series/{{Torchwood}}'', looked and sounded like a younger version of Creator/JohnBarrowman, despite not being related.
* ''Series/OnceUponATime'' does this excellently.
** Creator/GinniferGoodwin from ''Series/BigLove'' and Creator/JenniferMorrison from ''Series/{{House}}'', two actresses who for years people have said shared a resemblance and have often been confused with each other, are now playing mother and daughter.
*** [[CrowningMomentOfFunny Hilarious note:]] In commentary on a season one [=OUaT=] episode, Ginnifer Goodwin said that they were mistaken for each other so often that they both, completely independently of each other, just gave up and started signing autographs and giving interviews as each other.
** Whatever features Morrison doesn't share with Goodwin, she seems to share with Josh Dallas, her onscreen father.
** Bailee Madison played Goodwin's character as a child and the actress could easily pass for Goodwin's daughter or young sister. She also nailed some of her mannerisms.
** And when Rena Sofer was cast as Snow's mother, it's easy to note how much she looks like Goodwin.
** Creator/RoseMcGowan played Young Cora and bears a striking resemblance to Barbara Hershey, as well as nailing Cora's haughty demeanor.
** Creator/KristinBauer also looks enough like Creator/AngelinaJolie to almost provide a sense of continuity with the [[Film/{{Maleficent}} live-action Maleficent film]].
** The actresses who play Emma as a child and teenager are dead ringers for Morrison, especially Abby Ross as teenaged Emma.
* The boys playing a young Earl and Randy on ''Series/MyNameIsEarl''.
* Creator/VictorGarber and Creator/JenniferGarner as father and daughter on ''Series/{{Alias}}''.
** From the same series, there's "Arvin Clone", a doppleganger of HeelFaceRevolvingDoor main character Arvin Sloane. The latter played by [[http://static.tvtropes.org/pmwiki/pub/images/1arvin_199.png Ron Rifkin]] and the former by [[http://static.tvtropes.org/pmwiki/pub/images/15clone_5655.png Joel Gray]].
* Creator/CharismaCarpenter and Alexandra Chando on ''Series/TheLyingGame''.
* Andrea Brooks, who plays the teenage version of Amelia on ''Series/TheSecretCircle'', looks likes she could be Britt Robertson's twin.
* Elizabeth Penn Payne, the Masked Woman (aka [[spoiler: Alexis Meade]]) on ''Series/UglyBetty'' has nearly the exact same eyes as [[spoiler: Creator/RebeccaRomijn]].
* On ''Series/EightSimpleRules'', Martin Spanjers and Amy Davidson, who play brother and sister, look like they actually could be (contrast Kaley Cuoco as their other sibling, who looks nothing like them ''or'' either of the parents: Creator/JohnRitter and Katey Sagal).
* Averted on ''Series/FullHouse''. Here, the three girls (all blonde) look more like the blond Dave Coulier, who plays the unrelated Joey, than either Danny (their father) or Jesse (their uncle). The girl are said to take after their blonde mother, Pam, who is Jesse's sister.
** Continued as when Jesse's sons are born, they are blond -- again, looking more like the blond Joey.
** However, played straight by Candace Cameron (DJ) and Jodie Sweetin (Stephanie), who resemble each other enough that they easily pass for sisters.
* When Teri Garr guest-starred on ''Series/{{Friends}}'', the producers took advantage of her resemblance to Creator/LisaKudrow by casting her as Phoebe's birth-mother.
** Creator/ChristinaApplegate portrayed one of Rachel's sisters on the show, and the resemblance to Jennifer Aniston is hard to ignore.
* Sal Barone, the original actor for D.J. on ''Series/{{Roseanne}}'', left the show after the pilot, for various reasons; but what sealed the deal in casting Michael Fishman as his replacement was that he looked just like Roseanne Barr. (In fact, in one episode, Dan even remarks, clearly gobsmacked, how D.J. looks exactly like his mother when she gives him a dirty look.
* The actor for Al's twin brother in ''Series/HomeImprovement'' is actually of no relation to Richard Karn. The producers looked ''long and hard'' for a nigh-identical guy. Jonathan Taylor Thomas was also cast as Randy partly because he looks like he could actually be Creator/TimAllen's son.
* From ''Series/{{Merlin|2008}}'', the mother/son duos of Creator/ColinMorgan and Caroline Faber (Merlin/Hunith) and Creator/BradleyJames and Alice Patten (Arthur/Ygraine) are jaw-droppingly similar in facial structure and eye colour. John Lynch was also the perfect choice to play Merlin's father. See the [[{{Characters/Merlin|2008}} Character Sheet]] for pictures.
* On ''{{Series/Last Man Standing}}'', the actresses who played the Baxter daughters in season one (Alexandra Krosney, Molly Ephraim, and Creator/KaitlynDever) all look alike. Beginning in season two, Krosney (Kristin) was replaced by Amanda Fuller who does not resemble the other two as much. One Halloween episodes features Ephraim and Dever dressing up as each other's characters and you can almost not tell the actresses switched roles.
* From ''Series/{{NCIS}}'', Abby (Pauley Perrette, who apparently invokes this trope) and her brother (Daniel Rivas) were literally separated at birth in-universe.
** And with Brighton Sharbino as 10-year-old Abby.
** [=S12E3=], "So It Goes", features a number of flashbacks to Ducky's youth. Adam Campbell, the actor chosen to play Ducky in the flashbacks, is a dead ringer for David [=McCallum=] as he looked 50 years earlier as Ilya Kuryakin in ''Series/TheManFromUNCLE''.
** Robert Wagner has appeared numerous times as Tony's father and he and Michael Weatherly do look as though they could be father and son. This could also count as a CastingGag, as Michael Weatherly played a younger Wagner in 2004's "The Mystery of Natalie Wood."
* Eliza Coupe and Elisha Cuthbert as sisters Jane and Alex Kerkovich on ''Series/HappyEndings''.
* ''Series/DowntonAbbey'' is noted for its excellent casting in this respect:
** The resemblance between Lady Cora Crawley and her on-screen daughter Lady Mary is quite strong, especially considering that Elizabeth [=McGovern=] is American with no recent British relations while Michelle Dockery is English (although her father is Irish).
** Tom Branson and his older brother Kieran have the same hair and similar facial features; Allen Leech and Ruari Conaghan are not related.
* ''Series/{{Scrubs}}'': Creator/ZachBraff and Creator/TomCavanagh look so alike that it is easy to believe them as brothers. Same goes for their on-screen father, Creator/JohnRitter.
* Exploited on ''Series/GilmoreGirls'' as Lauren Graham and Alexis Bledel play mother and daughter. Lorelai and Rory have been mistaken for sisters in-universe.
** ''Series/GilmoreGirls'' is an interesting example in that creator Amy Sherman-Palladino cast Graham based on the fact that she perfectly exemplified Sherman-Palladino's vision for Lorelai in terms of personality, and Bledel had a bit of an attitude during one of her callbacks (due to being sick at the time) that Sherman-Palladino quite enjoyed. The fact that they look nearly identical was just a bonus, with Sherman-Palladino herself chalking it up to "pixie dust".
* ''Series/{{Lost}}'': Sterling Beaumon, who play young Ben Linus, bears an uncanny resemblance to Creator/MichaelEmerson.
* Creator/DominicPurcell and Creator/WentworthMiller had already been cast in ''Series/PrisonBreak'' as brothers Lincoln Burrows and Michael Schofield ''before'' they both arrived on set with matching haircuts, which even further confirms the perfect casting of the two.
* Ray Romano and Creator/BradGarrett on ''Series/EverybodyLovesRaymond'' could so easily be brothers in real life. It helps that both stand well over six feet tall, Garrett (Robert Barone) exceptionally so. In an episode where Romano plays a younger version of the Barones' father, Frank, in a "flashback" scene, he is exceptionally convincing as a younger version of Peter Boyle, who played Frank.
** Fred Stoller, who plays Ray's cousin Gerard, looks and sounds like him - which was a plot point to the episode where he first appears.
** Subverted with Madylin, Sullivan, and Sawyer Sweeten, the real-life siblings who play Ray and Debra's kids, a group of blondes to Ray Romano and Patricia Heaton's brunettes, which became a joke to the cast.
--->'''Robert/Brad''': Hahaha, they still don't look like either of ya!
* Creator/SarahHyland and Creator/ArielWinter, otherwise known as the Dunphy sisters on ''{{Series/Modern Family}}'' both bear a strong resemblance to Creator/TyBurrell, their on-screen dad.
** Also subverted, as while Hyland and Winter don't look that much alike (mostly due to Hyland's darker skin tone), they ''sound'' nearly identical.
** Likewise, Creator/TyBurrell bears a strong enough resemblance to Fred Willard that they can realistically portray a father and son.
* Not only does Tracey Gold of ''Series/GrowingPains'' look like she could believably be Kirk Cameron's sister, she looks like Kirk's actual sister, Candace Cameron Bure.
* ''Series/GameOfThrones'':
** Creator/NatalieDormer looks enough like a young Creator/DianaRigg that they could realistically play [[https://img.buzzfeed.com/buzzfeed-static/static/2014-06/27/3/enhanced/webdr06/enhanced-9495-1403855497-14.jpg grandmother and granddaughter]] on the show.
** Likewise, Finn Jones and Natalie Dormer could pass for [[http://primetime.unrealitytv.co.uk/wp-content/uploads/2015/05/game-of-thrones-margery-loras-555x325.jpg brother and sister]] in real life, despite not being related.
** Emilia Clarke and Harry Lloyd as siblings [[http://gameofthronesstyle.com/wp-content/uploads/2013/10/viserys-daenerys.png Daenerys and Viserys Targaryen]] have an uncanny similarity.
** Creator/PilouAsbaek (Euron Greyjoy) and his on-screen nephew Creator/AlfieAllen (Theon Greyjoy) also bear an uncanny resemblance.
** Jack Gleeson (Joffrey Baratheon) bears a strong resemblance to Creator/LenaHeadey (Cersei Lannister), his on-screen mother, especially in terms of their facial structure. Once Cersei cuts her hair in season 5, the resemblance becomes even more apparent.
** All over the place in the Stark family, depending on who takes after whom:
*** Creator/MichelleFairley and Creator/SophieTurner as mother and daughter Catelyn and Sansa Stark. When Petyr Baelish says Sansa looks just like a younger Cat, with the traditional House Tully appearance (red hair, porcelain skin, elfin features and big blue eyes, etc.), the audience can definitely agree with that assessment. Fairley also bears some resemblance to Creator/KateDickie, who plays Catelyn's sister Lysa Arryn (as seen [[https://i.pinimg.com/originals/e5/60/47/e56047e823ffa41e9c44d1c0be07ce65.jpg here]]).
*** Creator/RichardMadden (Robb Stark) and his in-show half-brother [[spoiler:(who is later revealed to actually be his cousin)]] Creator/KitHarington (Jon Snow) look similar enough that a common criticism of the first few episodes is that it's hard to tell which is which when they're in the same scene.
*** Creator/MaisieWilliams (Arya Stark) and Creator/IsaacHempsteadWright (Bran Stark), who play the younger Stark siblings, have very similar facial features, particularly high cheekbones, long noses and bushy eyebrows, as well as sharing Madden and Harington's dark hair and pale skin which is acknowledged in-universe as the signature Stark look.
*** Robb and Bran's looks are actually a change from the books where only Jon and Arya look alike in inheriting the Stark long face and coloring, while Robb and Bran have Catelyn's Tully features and look more like Sansa and Rickon. Notably, Catelyn is resentful that Ned's illegitimate son looks more like him than any of the trueborn sons she bore, and Arya feels like an outcast partially because she has inherited the Stark look while her other siblings, except for Jon (Ned Stark's son by [[MissingMom another woman]]), have all inherited the Tully look.
*** When she finally appears in flashbacks portrayed by Aisling Franciosi, Ned's sister Lyanna Stark bears a striking resemblance to [[spoiler:her son]] Jon Snow. Also, she has facial traits [[http://pm1.narvii.com/6143/ecf4f10095bded37b616cfe6eb03c6a5fe061d76_hq.jpg very reminiscent of Maisie Williams']], who in the books is said to be Lyanna's spitting image.
** Creator/GethinAnthony (Renly Baratheon) and Creator/JoeDempsie (Gendry) also bear more than a passing resemblance to one another, with their characters having inherited the trademark Baratheon TallDarkAndHandsome look. In fact, in the books, Brienne at one point mistook Gendry for Renly.
* The casting department on ''Series/PeakyBlinders'' really must be commended. Creator/CillianMurphy, Paul Anderson, and Joe Cole as the three eldest Shelby brothers all share the same blue eyes and jawline, and Anderson in particular is a dead ringer for a younger Tommy Flanagan, who plays their father. Among the ladies, Helen [=McCrory=] and Sophie Rundle could play mother and daughter, not aunt and niece, and they both share similar features with the men of the family. Youngest Shelby brother Finn as played by Alfie Evans-Meese wasn't as close a fit, resemblance-wise, but [[http://www.birminghammail.co.uk/whats-on/arts-culture-news/schoolboy-harry-kirtons-delight-peaky-6802957 Harry Kirton]] as the teenage Finn looks ''exactly'' like Cole.
* On ''Series/{{Charmed}}'' Emmalee Thompson plays Prue as a young child in three episodes. The resemblance between her and Shannen Doherty is striking -- they even have the same smile. Jennifer Rhodes, who plays the grandmother Penny, also looks incredibly like Doherty.
** Meanwhile, Finola Hughes plays the girls' mother Patty. She has quite the resemblance to her onscreen youngest daughter Alyssa Milano, especially when Phoebe's hair is long and light brown.
* On ''Series/TheSopranos,'' Rocco Sisto plays a younger version of Uncle Junior, because the resemblance to Dominic Chianese is uncanny. The over-sized glasses help.
* In the ''Series/SilentWitness'' story "A Body of Work", one plotline featured Harry's old college girlfriend and her [[spoiler: son, who bore a distinct resemblance to Harry. Harry turned out not to be the father, but they looked enough alike that the prospect was thoroughly believable.]]
* Creator/DichenLachman, the actress cast to play Skye's mother in flashbacks on ''Series/AgentsOfSHIELD'' bears an incredible resemblance to her fictional daughter. [[spoiler: It gets even more impressive when Dichen Lachmann's character shows up very much alive (if not unharmed) in the present and you get to see her acting alongside her kid.]] The resemblance between her and Skye is uncanny. Creator/ChloeBennet, who's mixed-race in real life, really does look like she could be the daughter of Lachmann and Creator/KyleMacLachlan.
** Adam Faison, the TimeShiftedActor who played a young version of [[Film/{{Thor}} Agent]] [[Film/TheAvengers2012 Jasper]] [[Film/CaptainAmericaTheWinterSoldier Sitwell]] in one episode of Season 5, not only bears a jaw-droppingly [[https://vignette.wikia.nocookie.net/marvelcinematicuniverse/images/e/ef/Young_Sitwell.png/revision/latest?cb=20180401181415 close resemblance]] to [[https://vignette.wikia.nocookie.net/marvelcinematicuniverse/images/f/fa/Eob6.jpg/revision/latest?cb=20170313004235 Maximiliano Hernandez]] but manages to capture his mannerisms almost exactly.
* On the E! series ''The Royals'', Alexandra Park, who plays Princess Eleanora, looks like she could actually be the daughter of Elizabeth Hurley, who plays the Queen of England.
* ''Series/OrangeIsTheNewBlack'': The show uses a lot of flashbacks, and the show is known for casting [[http://www.buzzfeed.com/scottybryan/the-child-actors-in-the-orange-is-the-new-black-flashbacks-l#.ehdoP6YOM child actors with an uncanny resemblance to their adult counterparts.]]
* On ''Series/TheFosters'', actresses Maia Mitchell and Bailee Madison play half sisters. They really [[http://www.dis411.net/wp-content/uploads/2014/10/bailee-madison-maia-mitchell-oct-15-2014.jpg look the part]].
* In the episode "Fragile Balance" of ''Series/StargateSG1'', Michael Welch plays a teenaged O'Neill and matches Richard Dean Anderson's speech patterns and mannerisms so well that it's a bit surprising that the other characters don't believe it's him at first.
* Late in the series ''Series/ParksAndRecreation,'' feckless layabout Jean-Ralphio Saperstein, played by [[https://en.wikipedia.org/wiki/Ben_Schwartz Ben Schwartz]], introduces his twin sister, Mona Lisa, played by [[https://en.wikipedia.org/wiki/Jenny_Slate Jenny Slate,]] who he describes as "''the wo-o-o-orst." Despite not being related, they practically match the trope for HalfIdenticalTwins.
* French "back from the dead" show ''Series/LesRevenants'' has twin sisters as two of its main characters, Lena and Camille. One dies, but comes back to life 4 years later, when her sister is played by an unrelated actress who looks very similar, but [[http://www.purebreak.com/media/photo-les-revenants-saison-2-jerome-407467.html older and taller.]]
* ''Series/CriminalMinds'' had a flashback episode with younger versions of Gideon and Rossi. Robert Dunne was good as Rossi, but Ben Savage was spot on perfect as Gideon.
* ''Series/HouseOfCardsUS'' cast Kelly [=AuCoin=] as Doug Stamper's brother Gary due to his similar appearance to Michael Kelly.
* On ''Series/GoodEats'', John Herina had a recurring role as Alton's nephew, Elton, as well as playing a young Alton in one episode. One could easily believe them to be related in real life (Herina could easily be taken for Brown's (nonexistent) son), but they're not.
* On ''Series/EmptyNest'', Kristy [=McNichol=] and Dinah Manoff actually look like they could be sisters.
* StargateSG1: In the episode "1969", Aaron Pearl as the young George Hammond. He looked and sounded so much like him that people were convinced that Creator/DonSDavis dubbed the voice over. He didn't.
* ''Series/IronFist2017'': A father-son case of this happens with Harold Meachum and Ward Meachum. Creator/DavidWenham (Harold) and Creator/TomPelphrey (Ward) bear similar facial features and even the same slicked-back hair.
* ''Series/Daredevil2015'':
** Skyler Gaertner, who plays young Matt Murdock as a child in season 1 flashbacks, [[https://pbs.twimg.com/media/DA7ZqBDWAAAw6Bc.jpg does have a bit of a resemblance]] to Creator/CharlieCox.
** Cole Jensen, who plays a younger Wilson Fisk in his childhood in season 1 flashbacks, actually bears resemblance to one of Creator/VincentDOnofrio's sons.
* In ''Series/MysteryScienceTheater3000'', the character of Synthia was created because Rebecca Hanson resembled a young Pearl Forrester, who was played by Mary Jo Phel.
* On ''Series/StrangerThings'', Noah Schnapp (Will Byers) could easily pass as Creator/WinonaRyder's (Joyce Byers) [[http://www.gramunion.com/tagged/young%20winona%20ryder real-life son]] with their shared brown doe eyes, straight brown hair, pale skin and nose shapes. Charlie Heaton also looks very believable as Joyce's son and Will's older brother, sharing Schnapp and Ryder's brown hair (and similar haircuts) but also clearly taking heavily after his estranged dad Lonnie (Ross Partridge.) Heaton and Schnapp also have fairly similar voices with their soft-spoken, gentle tones, although Heaton's voice is obviously much deeper.
* ''Series/{{Skins}}'':
** Creator/NicholasHoult and Kaya Scodelario are ''very'' convincing on-screen siblings with those IcyBlueEyes, [[RavenHairIvorySkin their pale skin and dark hair]] and as a credit to their acting, they manage to have also the same mannerisms;
** Chris' father is played by Mark Heap, who definitely looks like Joe Dempsie, as Jal [[LampshadeHanging lampshades]] in-universe.
* On ''Series/ArrestedDevelopment'', Creator/IslaFisher plays Creator/RonHoward's fictional illegitimate daughter Rebel Alley. Fisher looks enough like Howard's real-life daughters Creator/BryceDallasHoward and Paige Carlyle Howard that it makes it look believable.

[[folder: Music]]
* Young Music/EdSheeran in the music video for "[[https://www.youtube.com/watch?v=K0ibBPhiaG0 Castle On the Hill]]" looks a lot like adult Ed Sheeran, a similarity very apparent in the transition cut near the end of the video.

[[folder: Web Original]]
* ''WebVideo/TheLizzieBennetDiaries'', a setting update of ''Literature/PrideAndPrejudice'':
** The Bennet sisters, Jane, Lizzie and Lydia. Jane's actress in particular looks very similar to both her sisters.
** William Darcy and his sister, Gigi, are two peas in a pod. It's hard to believe they are not related in real life.
** Inverted on one occasion. Wes Aderhold and Mary Kate Wiles look similarly enough that some viewers thought they were related. They aren't and it got awkward when their character's relationship turned romantic.

[[folder:In Universe]]
* In the science fiction novella "E for Effort" two inventors with a [[{{Chronoscope}} time viewer]], which can see anything in history, initially use their device for making hyper-realistic films. They do this by filming, say, Napoleon Bonaparte during the battle of Waterloo, then find an actor through Central Casting [[note]]a casting agency which has head shots of everyone in Hollywood[[/note]] who bears a striking similarity to Napoleon in order to film some closeups and voice all the dialog. However, this is only to generate funds for their long term plans.

* Lyricist Lorenz Hart was constantly being told that his brother Teddy, a comedian, had an uncanny resemblance to a famous comedian of the day, Jimmy Savo. When Richard Rodgers suggested that he and Hart do a musical based on Shakespeare, Hart immediately pitched the idea of ''Theatre/TheComedyOfErrors'', with Jimmy Savo and Teddy as the two Dromios. Thus ''The Boys From Syracuse'' was born, and Teddy Hart got his BigBreak.