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    13 Times Hollywood Used Grown Adults To Play Teenagers On-Screen And 12 Times They Actually Went With The Right Age

    I want whatever kind of delusion it takes to be 42 and trying to pass as a 17-year-old.

    Hollywood is notorious for casting older actors in roles that are meant to portray high school-aged students and teenagers. Sometimes it can get so wild that you find yourself watching people play a character that's half their real age.

    Woman sitting on a couch looking intently at a TV remote in her hand. She appears focused and confused

    So, here are 13 adult actors who took the fountain of youth to a whole new level and portrayed teenagers on-screen, and 12 then-teenage actors who actually got cast as teens:

    1. Adult: Audrey Hepburn

    Audrey Hepburn in "Breakfast at Tiffany's", wearing a black dress, tiara, and gloves, with a cigarette holder

    2. Teenager: Lindsay Lohan

    Lindsay Lohan on the set of "Mean Girls"

    3. Adult: Rachel McAdams