Actors and actresses who went to insane lengths to transform themselves.
3. Natalie Portman dropped 20 pounds to play a ballerina in “Black Swanâ€rnrnPortman was on the carrots and almond diet, and worked five to eight hours a day for a year to slim her already trim figure down for this role. “There were some nights that I thought I literally was going to die,†Portman told EW. “It was the first time I understood how you could get so wrapped up in a role that it could sort of take you down.â€