Stars Who Give Back

Kate Bosworth took donations and watched the moving performances, including an ensemble effort live from Fashion Rocks of "Just Stand Up,"—a song created for the Stand Up To Cancer initiative—by Mariah Carey, Beyonce, Mary J. Blige, Rihanna, Fergie, Miley Cyrus, Natasha Bedingfield, Leona Lewis and Carrie Underwood. It's not too late to support the cause—donate online at standup2cancer.org.