Which of Your Favorite Celebs Are Turning the Big 4-0 in 2012?Remember when you were a kid and 40 felt old? Not anymore! You would never know these youthful stars are hitting such a milestone this year! (40 is indeed the new 20... or at least 29.) So take a look at these childhood photos and see if you can guess which celebs are turning 40 in 2012! By Elizabeth Perkins
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