10/10/2012 03:15 pm ET Updated Oct 18, 2012

Stars Who Gained Weight For Movie Roles: George Clooney, Charlize Theron, Matt Damon And More

When you're an actor, you have to be willing to do whatever it takes to nab that dream role -- including dropping and gaining weight to portray a character.

And that's exactly what some of Hollywood's biggest stars have done.

From George Clooney and Matt Damon to Charlize Theron and Renee Zellweger, celebrities have packed on the pounds (and we're talking serious, serious pounds) for films they are truly invested in.

But a little cellulite never hurt anyone, especially when all those cupcakes and donuts put you in the running for an Academy Award.

Check out 15 stars who've chowed down for movie roles: