Movies might be entertainment but they're not all fun and games. When it came to portraying a character the actors on this list took their job seriously and dropped pounds in the double digits to create a dramatic onscreen transformation, sometimes with shocking and down right scary results.
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Like his co-star Matthew McConaughey, Jared Leto has been sporting a gaunt frame for The Dallas Buyer's Club as well, playing a transsexual woman with AIDS. Jared is known for also putting on a ton of weight to play John Lennon's murderer in Chapter 27. He gained 67 lbs for that role.
Hathaway dropped in weight to appear frail as a prostitute with tuberculosis in the new Les Miserables film.
Mila Kunis wasn't too happy with her appearance after dropping 20 pounds to play a ballerina in the acclaimed Black Swan. She told E! News, "I had no shape, no boobs, no A$$. All you saw was bone." Kunis continued: "In real life, I looked disgusting, but in photographs and on film, it looked amazing."
Natalie PortmanMila Kunis wasn't the only one who needed to get skinny for Black Swan. Her co-star Natalie Portman also had to slim down about 20 pounds to portray a ballet dancer. She had gotten so thin Director David Fincher made sure her trailer was stocked with food. The hard worked paid off, though, because Portman went on to win the Oscar for best actress in 2011.
The former Lost star and Party of Five hearthrob went to a dark place to play the villain in the 2012 film Alex Cross. His preparation for the role included losing between 35-40 pounds to create a character that he says was "stripped down and gaunt and sort of wirey in a slightly disturbing way."
After giving birth to her first child in 2009 J-Hud needed to slim down quick to play Winnie Mandela in the film Winnie. She famously used Weight Watchers to transform her physique and lose more than 80 pounds.
Damon was 50 pounds lighter for his portrayal of a heroin addict in the 1996 movie Courage Under Fire. It was a huge feat though, as the Bourne Identity actor said he went to far, eating only 100 calories a day, and experiencing dizzy spells, hot flashes, and lasting damage to his adrenal gland.
The typically comedic actor got serious for the film Rescue Dawn where he played a prisoner of war. Zahn melted away 40 pounds to authenticate the role.
Colin Farrell was nothing short of alarming when he was photographed 44 pounds too skinny in 2008. Turns out he lost the weight for the movie Triage where he plays a Photojournalist during the Bosnian war.
Tom HanksIn order to make his role as a plane crash survivor stranded on an island for several years authentic in Cast Away Hanks lost more than 50 pounds.
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Beyonce told People Magaizne that she wanted to be able to see the change over the years in her character Deena in Dreamgirls. In order to acheive that she lost 20 pounds on a 2 week master cleanse. For a curvey singer who's used to being bootylicious it was quite the transformation.
Remember when you saw The Sixth Sense for the first time, read the closing credits, and yelled "That's Donnie Wahlberg?!" when you found out he was the emaciated ghost that shot Bruce Willis in the stomach! It was almost as shocking as the twist at the end of the film (and if you don't know the twist slap yourself and then rent the movie). The New Kids on The Block singer shed 43 pounds for the role. Someone give this guy an Oscar!