Celebrity Weight Loss and Gain for Roles Next Gallery: Gina's Snapshots Previous 296041 Next 50 Cent shocked fans when he posted this picture to Twitter, in preparation for an upcoming role as a cancer patient. [Getty images] Previous 296046 Next He bulked back up to the 50 we're used to shortly after filming. [Getty images] Previous 296051 Next For her critically acclaimed role as a serial killer in 'Monster,' Charlize Theron gained 30 pounds. [Getty images] Previous 296056 Next Charlize earlier this year looking sleek and slim in all black. [Getty images] Previous 296061 Next Christian Bale played an emaciated insomniac in 'The Machinist.' [Getty images] Previous 20951 Next He quickly gained weight for his next role in 'Batman Begins.' [Getty images] Previous 296066 Next Clooney had to put on the pounds for his role in 'Syriana,' but we still think he's a hottie. [Getty images] Previous 296071 Next There's the heartthrob back on his grind at the 2013 Academy Awards. [Getty images] Previous 296076 Next Jennifer Hudson slimmed down from a size 16 to a size 6 for her role as the wife of Nelson Mandela. [Getty images] Previous 296081 Next Back in 2008, Jennifer was plus sized (but still beautiful!) [Getty images] Previous 296086 Next Jared Leto is unrecognizable in 'Chapter 27,' packing on 60+ pounds for the role. [Getty images] Previous 296091 Next He says he'll never do another role that requires him to gain that much weight. [Getty images] Previous 296096 Next Matt Damon had to loosen his belt a few notches for his role in 'The Informant.' [Getty images] Previous 296101 Next Now Damon's more dapper than ever and back to his healthy size. [Getty images] Previous 296106 Next Already thin, Natalie Portman had to drop an extra 20 pounds for her role in 'Black Swan.'[Getty images] Previous 296111 Next At the Academy Awards that year, Portman showed off her baby belly. What a difference! [Getty images] Previous 296116 Next Renee's infamous role as Bridget Jones required her to go up a few dress sizes. [Getty images] Previous 296121 Next Here's Renee posing at an event in 2013. [Getty images] Previous 296126 Next To be a believable 'castaway,' Hanks had to trim over 50 pounds. [Getty images] Previous 296131 Next Here's Tom Hanks at the 2013 Tony Awards. [Getty images] Previous Pause Next 1 of 20
