02/20/2015 10:38 EST | Updated 02/20/2015 10:59 EST

The Most Dramatic Oscar Movie Role Transformations Ever

If there's one thing the Academy of Motion Picture Arts and Sciences loves, it's watching an actor completely disappear into a role. Whether a star gains weight or loses weight, chops off her hair, or dons a horrible wig, dramatic transformations are the stuff of Oscar movie gold.

Thanks to the magical powers of Hollywood makeup artists and stylists, anything is possible. They say that "playing ugly" is the secret to winning an Academy Award (think Charlize Theron in "Monster"), but could it really be true?

We think the actors and actresses in our gallery might say yes! Just scroll through to see our picks for some of the most dramatic movie role transformations ever.

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