*Serena Williams is venturing into a new area of charity.

Williams is UNICEF’s newest international Goodwill Ambassador.

UNICEF Executive Director Anthony Lake announced her appointment on Tuesday, saying she is also known as a philanthropist and champion of children.

She’s been with the organization since 2006 when she traveled to Ghana for a huge health campaign. Volunteers immunized children against childhood diseases and distributed free mosquito nets.

As the new ambassador, Serena will help promote the U.N.s mission to provide education and good health to children all over the world.