Premiere Killers LA
Credit: ASSOCIATED PRESS
It's hard to imagine waify Demi as a hard-body, shaved-head Navy operative, but the actress massively bulked up for G.I. Jane (1997). Moore spent hours training rigorously under the direction of a real-life Navy SEAL and performed all her own stunts - who could forget those single-arm push-ups?
The ageless beauty now prefers a more Zen workout - she's into Bikram yoga.
Actor Ashton Kutcher arrives with his wife, actress Demi Moore, at the "Killers" premiere on Tuesday, June 1, 2010, in Los Angeles. (AP Photo/Jason Redmond)