15 celebrities you probably didn't know have a twin

• Everyone's heard of celebrity twin pairings like Mary-Kate and Ashley Olsen, but you probably didn't know that stars like Ashton Kutcher or Vin Diesel have twins, too. 
• "Bohemian Rhapsody" star Rami Malek has a twin brother named Sami Malek. 
• Scarlett Johansson has a twin brother named Hunter Johansson.
• Visit Insider's homepage for more stories.

Caroline Praderio contributed to a previous version of this article.

SEE ALSO: 18 celebrity siblings you had no idea existed

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Scarlett Johansson has a twin brother named Hunter Johansson, who's an actor just like his sister.

According to E! News, the "Avengers" star is three minutes older.  

Supermodel Gisele Bündchen has a fraternal twin named Patrícia Bündchen.

The model called her sibling "my best friend since the day we were born."

In an Instagram post shared in 2019, she called Patrícia "my other half."

Here's '90s pop star Aaron Carter with his twin sister, Angel.

They've had a tumultuous history in more recent years. 

Kiefer Sutherland has a twin sister named Rachel Sutherland.

Kiefer is known for his roles on "24" and "Designated Survivor."

Rachel has worked behind-the-scenes in Hollywood, as a post-production producer for projects like "Dark Matter" and a post-production supervisor for shows like "Burden of Truth."

"Bohemian Rhapsody" star Rami Malek, left, used to switch places with his identical twin, Sami Malek.

While appearing on "Jimmy Kimmel Live" in 2015, the "Mr. Robot" star said that he and his identical twin (who was backstage at the talk show) "don't look as much alike as we used to."

"We were troublemakers as kids, we did some bad stuff," Malek said, explaining that they used their appearances to their advantage in some situations.  

The Oscar-winning actor said that he pretended to be Sami to help him get the points needed to pass a Greek studies class and earn his degree at UCLA. Rami, who was in acting school at the time, took Sami's place and delivered a Greek tragedy monologue that impressed the professor, which led Sami to pass the class and graduate. 

Rami shared the same story during an appearance on "The Graham Norton Show" in 2018, adding that their appearances started to look less similar around the age of 18. 

Sami also sounds exactly like his brother, based on an Access Hollywood interview backstage at the 2019 Oscars. 

Actor Ashton Kutcher's twin brother Michael, left, has cerebral palsy and works to raise awareness for the condition.

They appeared together on a red carpet for the Starkey Hearing Foundation's "So the World May Hear" Awards Gala in July 2013 in St. Paul, Minnesota.

Ashton previously opened up about his brother during a 2017 acceptance speech, saying that Michael taught him that "loving people isn't a choice and that people aren't actually all created equal."

"When I got older, I spent years and years feeling bad about it, our inequalities," the "That 70's Show" actor continued. "He also taught me that he had gifts that I didn't have. Extraordinary gifts that I didn't have, and that every time I felt sorry for him in life, I made him less. He taught me that and he gave that to me."

Actor Jon Heder, left, is best known for "Napoleon Dynamite." His identical twin Dan works in visual effects.

Dan has done visual effects for films like "Alita: Battle Angel," "Avengers: Endgame," and "Spider-Man: Far From Home."

"X-Men" star Shawn Ashmore, right, has an identical twin named Aaron. He's an actor, too.

Shawn, who played Iceman in the "X-Men" movies, is set to appear as Lamplighter on season two of Amazon Prime Video's "The Boys."

You may recognize Aaron from his roles on "Veronica Mars," "Smallville," and "Locke & Key."

British Olympic runner Mo Farah has a twin named Hassan Farah.

The athlete shared a photo of himself and his sibling in 2016. They were separated from each other at 8 years old and didn't reunite until 12 years later, according to Daily Mail. 

"Saving Private Ryan" actor Giovanni Ribisi has a twin sister, Marissa Ribisi, best known for her role in "Dazed and Confused."

Giovanni has starred in the "Ted" movies and the show "Sneaky Pete."

Musician Alanis Morissette has a twin, Wade, who wrote a book about yoga.

In addition to being an author, he's also a musician and yoga instructor.

Alanis gave a shout-out to her brother in an Instagram post shared on their birthday in 2020, calling him "my angel twin."

They don't look very similar, but Vin Diesel and his brother Paul are actually twins.

Vin Diesel, whose real name is Mark Sinclair, shared a photo in 2014 of his brother and late "Fast & Furious" costar Paul Walker together. 

The actor captioned the post "The Two Pauls" and spoke about Walker being like a real-life brother to him. 

Ronde Barber and Tiki Barber are twins who were born in April 1975.

Tiki was a running back for the New York Giants, has retired and is now a TV personality.

Ronde was a cornerback for the Tampa Bay Buccaneers and retired from the NFL in 2013.

The two siblings have cowritten a book together and appeared on a celebrity showdown edition of "Masterchef."

DJ Samantha Ronson, right, has a twin sister named Charlotte Ronson who's a designer.

They have an older brother named Mark Ronson, who has collaborated with the biggest names in the music industry, from Miley Cyrus to Bruno Mars. 

"Buffy the Vampire Slayer" star Nicholas Brendon has a twin named Kelly Donovan.

Nicholas Brendon played Xander Harris on "Buffy." Donovan was a body double for his brother on two episodes of the show.