September 20, 2011 5:37 PM | By Jackie Burns
Astonishing movie star body transformations

These actors went to great lengths to change their physical appearance

Christian Bale, Charlize Theron, Matthew McConaughey
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It’s a tremendous test of their willpower and stamina – and in some cases makes them physically sick - but movie stars seem to be suckers for roles requiring them to completely transform their looks. From staggering weight loss to rapid pound packing to more than a few prosthetic noses, Hollywood (and Oscar) just can’t get enough of actors who go above and beyond in the name of art. Click through the gallery to see some of the most drastic movie star transformations over the years.