15 celebrities you probably didn't know have a twin

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

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."

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

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."

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.

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."

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

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."

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.

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

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."

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.

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."

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.

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