Inspired by a young friend who died from leukemia, singer Rihanna is working to get help for those who suffer from the disease. Rihanna was among the celebrities who submitted a request for funding to Pepsi's Refresh Project, which doles out $20 million to various causes, and was at the foundation's kickoff party Friday night during Super Bowl festivities. The singer is trying to raise money for DKMS, which tries to find bone marrow donors for those suffering from leukemia.