Rihanna Fights for Lives

Rihanna is working with DKMS to help raise awareness for the need for people to come forward to become donors.

In February 2008, Rihanna lent her support to help a New York mother of two, Lisa [Gershowitz] Flynn, in desperate need of a life saving marrow donor.

She told PEOPLE magazine, "I think DKMS is an incredible charity because you can really see the results," says Rihanna, who performed at the DKMS Linked Against Leukemia gala last May for free.

She added: "My own charity, Believe, works specifically with children in need [and with children with leukemia]. Children need their mothers more than anything else in the world. Lisa has two children. My charity will continue to work with DKMS, because in finding a way to save Lisa's life, we will in turn be saving her children's lives."

As a result of Rihanna's efforts, more than 5,000 PEOPLE readers contacted DKMS to become potential donors. Through the awareness that Rihanna helped raise, Lisa found a matching donor in March 2008.

Rihanna Helps N.Y.C Mom Find Bone Marrow Donor, February 23, 2008

Rihanna 'Honored' to Be Part of Leukemia Miracle, PEOPLE, March 13, 2008

Rihanna Partners with DKMS for Exclusive Benefit Show April 9