Putting their money where their mouths are! In addition to walking the red carpet and living the glamorous life, these celebrities, including Angelina Jolie, Lauren Conrad, and Matt Damon, are working hard to make the world a better place. Read up on their charities!
Pitch Perfect's Snow started Love Is Louder, a web community and organization that hosts outreach events nationwide, in 2010 along with The Jed Foundation and MTV to combat bullying, discrimination and depression. "I was bullied in school by a girl who made my life miserable . . . and I feel like every single person I know has a story like that in some way, whether it was in the workplace or school or by a parent or even just the voices inside your head that tell you you're not good enough," Snow tells Us. "Love is Louder has really helped people realize that this is not a game anymore. These are people's lives."