Zac Efron's first mistake was that now notorious interview with Australia's "Hot 30 Countdown," where he masterfully unhooked a bra in front of his "The Lucky One" co-stars and the world.
So of course, Jimmy Kimmel had to seize upon Zefron's bra-removal skills when the actor appeared on his show on Monday night. After warming Efron up with a bit of small talk, Kimmel got down to brass tacks and challenged Zac to an epic lingerie duel.
Wait until you see who Zac got to undress. Watch above! (The bra action starts at around 2:50.)
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