14 Celebrities You Didn't Know Have Twins

Giovanni Ribisi and his twin sister, Marissa, are both famous actors. He's been in films like "Gone in 60 Seconds," "Saving Private Ryan," and "Gangster Squad" (and let's not forget his role as Phoebe Buffay's brother on "Friends"), and Marissa starred in "Dazed and Confused," "Pleasantville," and "Felicity." She launched a fashion line called Whitley Kros in 2007 and was previously married to Beck.

Fun fact: Giovanni and Marissa were delivered by Bibbe Hansen — who is Beck's mom!