We usually think of our favorite movie stars as one-of-a-kind, but this isn't always the case. You've seen them on TV, on the big screen, and maybe even center stage at a sold-out arena, but there may be someone you've been missing all along — their twin.
Some celebrity twins are extremely well-known, such as Mary-Kate and Ashley Olsen, Tia and Tamera Mowry, and Dylan and Cole Sprouse. In the case of those twins, they shared similar goals, which led to them becoming both household names.
But what happens when one twin desires the limelight while the other prefers a normal life? So you get a pair of less well-known celebrity twins. Some twins do not become famous because of a lack of opportunity or interest. People have no idea that many actors and models have fraternal or even identical twins. This is where we step in. Scroll down to check out some of Hollywood's most surprising celebrity twins you may never know.

#1 Alexandra Paul and Caroline Paul

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Alexandra Paul has a twin sister named Caroline Paul. Caroline was one of the first women to serve in the San Francisco Fire Department, where Alexandra played saving lives on TV.
Caroline Paul wrote a memoir about her time as a firefighter and has since found success as a writer, whereas Alexandra now primarily works as a wellness coach.

#2 Billy Dee Williams and Loretta Williams

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Billy Dee Williams is well-known for his long and illustrious acting career, most notably as Lando Calrissian in the Star Wars films and Harvey Dent in 1989's Batman. However, you may not be aware that Williams has a twin sister, Loretta Williams.

#3 Giovanni Ribisi and Marissa Ribisi

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Giovanni Ribisi gained popularity in the 1990s with roles in Friends, Saving Private Ryan, The Gift, and Boiler Room before shooting his most high-profile role in Avatar. He's best known these days as Sneaky Pete on TV. Marissa Ribisi, his twin sister, is also an actor, with credits including Dazed and Confused, The Brady Bunch Movie, and Pleasantville. She took an 18-year break from acting before returning in 2021 with a role on TV On the Verge.

#4 Jason London and Jeremy London

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If you were one of the many hipsters who saw the iconic comedies Mallrats and Dazed and Confused in the 1990s, you might have thought they both starred the same young handsome actor. In fact, Jeremy London played TS Quint in Mallrats, while his twin Jason London played Randall 'Pink' Floyd in Dazed and Confused.
For a time, both London brothers had successful careers, with Jeremy landing a long-running role on TV's Party of Five and Jason appearing in films such as To Wong Foo, Thanks for Everything! Julie Newmar and the sequel to Carrie. Unfortunately, their careers were short-lived, and both men have had troubled lives, including drug and alcohol problems and arrests.

#5 Joseph Fiennes and Jacob Fiennes

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It's no secret that Joseph Fiennes is the younger brother of Ralph Fiennes, and the cousin of explorer Sir Ranulph Fiennes - but did you know he also has a twin?
Joseph is the twin brother of conservationist Jacob Fiennes, who manages the large country estate of Holkham in Norfolk, England.

#6 Kiefer Sutherland and Rachel Sutherland

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Kiefer Sutherland is the son of fellow screen legend Donald Sutherland, but you may not be aware that he has a twin sister, Rachel Sutherland.
While Rachel has not pursued a career in acting, she does work in the entertainment industry behind the scenes. She has worked as a post-production supervisor on numerous television shows, including Nurses and Pretty Hard Cases.

#7 Linda Hamilton and Leslie Hamilton Freas

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Linda Hamilton is the twin sister of Terminator legend Leslie Hamilton. Leslie doubled for Linda in several scenes in Terminator 2: Judgment Day, including a dream sequence, a scene involving a mirror, and a scene in which Linda's Sarah Connor is imitated by the shape-shifting T-1000.
Leslie Hamilton Freas died in August 2020 at the age of 63.

#8 Lindsay Greenbush and Sidney Greenbush

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Anyone who watched the 1970s/80s TV classic Little House on the Prairie will remember the character of Carrie Ingalls, but you may not have realized that the role was played by two actresses. Lindsay and Sidney Greenbush, twin sisters, shared the role and were credited as Lindsay Sidney Greenbush.
As they struggled to find roles after the end of Little House on the Prairie, the twins both retired from acting and returned to school. Lindsay went on to become an equine iridologist, while Sidney is a horse breeder and former professional rodeo rider.

#9 Nicholas Brendon and Kelly Donovan

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Nicholas Brendon got his big break as Xander Harris, the male lead in the television series Buffy the Vampire Slayer. Kelly Donovan, Xander's identical twin brother, served as his stunt double on the show, and the two appeared side by side in the season five episode The Replacement, in which Xander is magically split in two.
Kelly Donovan has a few other film credits, both as an actor and as a crew member. Brendon's career suffered after Buffy ended, and he has since received the most attention for his high-profile arrests for alcohol, drugs, and spousal abuse.

#10 Vin Diesel and Paul Vincent

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We're all used to Vin Diesel telling us how much he cares about family because of his long-running role as Dominic Toretto in the Fast & Furious films. True, Diesel has a close familial bond with his twin brother.
The action star (real name Mark Vincent) has a twin brother named Paul Vincent, about whom little is known. Paul wants to live a simple life away from the spotlight, so the fact that he and Vin are not identical probably helps.sib