ENTERTAINMENT
05/23/2014 11:52 am ET Updated May 23, 2014

On-Screen Transformations Prove Some Celebrities Take Method Acting To The Extreme

Some actors take their roles very seriously.

From Matthew McConaughey's 40-pound weight loss for "Dallas Buyers Club" to Bradley Cooper's 40-pound weight gain for "American Sniper," celebrities have the ability to transform their bodies in order to portray certain characters.

Here are 26 stars who took method acting to a whole other level:

PHOTO GALLERY
Stars And Their On-Screen Transformations
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