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Extreme makeovers: How celebs transform for movies

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After actor Jared Leto, who colored his hair green and bulked-up his physique for the role of Joker in the upcoming film “Suicide Squad,” the next actor to have undergone a complete physical transformation for a new role is Matthew McConaughey. Click through to take a look at their transformation and also some of the other extreme physical makeovers other stars underwent for characters' sake.

© Clay Enos/Warner Bros.; Alessio Botticelli/GC Image/Getty Images
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