Rihanna:Believe Foundation
Lady Gaga made a huge donation from her stage performances revenue generated.
Kate Winslet: PETA, The Golden Hat foundation.
Winfrey created the Oprah's Angel Network, a charity that supported charitable projects and provided grants to nonprofit organizations around the world.
Charlize Theron: Charlize Theron Africa Outreach Project.
George Clooney has worked very hard to stop the genocide in Sudan. He also on the United Way's board of trustees, and is also known for his generous donations.
Daniel Radcliff: Book Aid International and the Lupus Foundation of America.
Selena is involved in philanthropic activities through charity work and different environmental and social causes.