The 16 Diet Secrets of Today’s Hottest Celebrities

12. Natalie Portman

Natalie Portman has always been a thin woman, but she needed to be even thinner for her role as a ballerina in Black Swan. In order to drop the weight in time, she lived on nothing but almonds and carrots. While it doesn’t seem savory or sustainable, it did allow her to lose 20 pounds in time for the movie. She may have had it rough, but it wasn’t as bad as Christian Bale’s weight loss for The Machinist.