Wow, this just made me like Rihanna even more!  The singer took time out of her busy schedule to raise awareness and put out a call for bone marrow donors when she heard that Lisa Gershowitz-Flynn, 41 year old lawyer and mom would die within 4-6 weeks if she didn't find one.  After Rihanna started her campaign, 5,000 people contacted DKMS, the world's leading bone marrow donor center, to find out more about becoming a potential donor.  And of those people one became a match for Lisa.  Lisa said about her life saving donor,

"Today a 32-year-old guardian angel consented to be my donor, even though in all likelihood she has never met me and does not know who I am. My life will be saved because of you, my family and friends (old and new)," Flynn writes. "My children (Michael, 5, and Alexandra, 3) will have their mother, my husband will have his wife, and my parents will have their daughter."

Earlier in a statement Lisa also mentioned how thrilled she was that Rihanna decided to help her,

"For Rihanna to even be thinking about helping others and putting herself out there when she is so busy with her career is tremendous."

What an absolutely amazing story!