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!
"My old sister Elizabeth is mentally disabled. She is my hero," Longoria tells Us of her motivation to begin Eva's Heroes, an after-school program for special needs children in San Antonio, Texas.