Old enough to remember Luke Perry playing a teenager in the original 90210? Don't worry, you're still young enough to play a teen in the remake. Donovan was almost 31 when he first appeared on the show in 2009 as teenager Teddy Montgomery.
Photo: The CW
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Alan Ruck, Ferris Bueller's Day Off
Ruck's faultless portrayal of a tortured teen in Ferris Bueller may have been down to his maturity as an actor, rather than a natural adolescent angst. (He was 30).
Photo: Paramount Pictures
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Denise Richards, Wild Things
It might have been poor taste to let a 17 year-old loose on all those sex scenes, so they hired Richards, then a sensible 27.
Photo: Columbia Pictures
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Ralph Macchio, The Karate Kid III
Suspend your disbelief (and try not to LOL) as a 27 year-old 'kid' defends his title in the “Under Eighteen All-Valley Karate Championship".