Robyn Rihanna Fenty (born February 20, 1988), better known mononymously as Rihanna (pronounced /riˈænə/), is a Barbadian R&B recording artist, songwriter and model. Born in Saint Michael, Barbados, Rihanna moved to the United States at the age of 16 to pursue a recording career under the guidance of record producer Evan Rogers. She subsequently signed a contract with Def Jam Recordings after auditioning for then-label head Jay-Z.
http://en.wikipedia.org/wiki/Rihanna