12) Anne Hathaway

In Les Misérables (2012), Anne Hathaway's tremendous weight loss was achieved on a diet of just 500 calories daily for her frail look as Fantine. For instance, Hathaway cut her hair short for the role, completely dedicating herself to the physical and emotional exactions of the character. Years later, Hathaway underwent severe martial arts and strength training for The Dark Knight Rises to become the agile Catwoman.
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Edited by Abhimanyu Sharma