Zac Efron reveals his off-the-hook hidden talent, plus more from Mariah Carey, Matthew McConaughey and other stars
Credit: Karen Neal/ABC
Updated: Friday Apr 20, 2012 | 06:00 AM EDT
By: Christie LaRusso
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"You're a little bigger than most of the girls I've done this to."– Zac Efron, to the "Guillermo" stand-in he had to undress in a bra-unhooking contest, on Jimmy Kimmel Live!
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