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Tom Hanks lost 22 kilos to star in Cast Away!
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Mila Kunis lost 10 kilos to play a ballet dancer in the film 'Black Swan'. She was nominated for an Oscar for her performance.
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Adrien Brody lost fourteen kilograms to play "Wladyslaw Szpilman" in 'The Pianist'. It was worth it though— he won an Oscar for his performance.
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Beyonce played singer "Deena Jones" in the film 'Dreamgirls'. She lost six kilos to be able to play the role.
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Tom Hanks lost fifteen kilos to play Andrew Beckett in the film Philadelphia. His reward for all that dieting? An Oscar and a Golden Globe!
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Lots of celebs have gone on crazy diets just to make their performances all the more believable. Often, A-listers have to lose a lot of weight in just a few months. Christian Bale underwent one of Hollywood’s biggest transformations. He lost a jaw-dropping 28 kilos to star in 'The Machinist!'
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Anne Hathaway won an Oscar for her performance as "Fantine" in the film 'Les Misérables'. However, it was hard work, she didn't just have to give one of the best acting performances of her life, but she also had to lose eleven kilos to play the role.
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Christian Bale lost 20 kilos to star in 'The Fighter'. He won a Golden Globe and an Oscar for his performance.
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Matthew McConaughey usually graces our screens as muscle-y eye candy, but he lost 19 kilos to play "Ron Woodroof" in 'Dallas Buyers Club'. He won a Golden Globe and an Oscar for his performance.
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Natalie Portman played the lead in 'Black Swan'. Just like fellow actress Mila Kunis, Portman lost 10 kilos to star in the film. However, while all that dieting did not pay off for Kunis, it did for Portman, who won an Oscar for her performance.