We're nearing Mean Girls' 10th anniversary at the end of this month, but it's crazy that after a decade, we're still learning new things about the movie! Here's ten fun facts you definitely didn't know about the film, like who was supposed to play Regina George instead of Rachel McAdams, and that Aaron Samuels was based off of Tina Fey's pal, Jimmy Fallon!
Which of these trivia facts do you find surprising? Tweet us @OKMagazine.
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