Charlize Theron – Monster

Considered one of the most beautiful actresses in Hollywood, Charlize Theron had to go through a major physical transformation to play real-life serial killer Aileen Wuornos in the movie Monster. Although she was offered a fat suit, Charlize insisted on gaining 30 pounds, as well as shaving off her eyebrows, coloring her hair, and wearing contacts and prosthetic dentures. Her skin was made to look blotchy through the use of makeup. For her hard work and amazing performance, Charlize won an Academy Award and a Golden Globe.