You might remember Emmy Rossum as the sweet ingenue in the film version of Phantom of the Opera (or maybe for her gorgeous red carpet appearances -- the girl just glows!). She's been in a couple of things since, then, but most recently she's filmed Dragonball, a role for which she really had to step up her fitness routine.

The actress incorporated a lot of strength training and kickboxing into her workout to get ready for the action film, saying it was "hardcore, but it was a lot of fun." She didn't notice a change in her weight, but she was aware of a change in the tightness of her body, and said, "I got really buff and strong while training."

Though she might have gotten "buff," she's continued to have a very feminine shape, which is just one more piece of evidence that working out is sexy!