** FILE ** Barbadian singer Rihanna performs during the fifth stop of her "777" worldwide tour at the E-Werk club in Berlin on Monday, Nov. 19, 2012. (AP Photo/Markus Schreiber)
**FILE** Chris Brown looks on alongside his attorney Mark Geragos at Los Angeles County Superior Court in Los Angeles on Aug. 25, 2009, during his sentencing for assaulting his girlfriend Rihanna. (Associated Press)
**FILE** Chris Brown looks on alongside his attorney Mark Geragos at Los Angeles County Superior Court in Los Angeles on Aug. 25, 2009, during his sentencing for assaulting his girlfriend Rihanna. (Associated Press)
**FILE** Chris Brown looks on alongside his attorney Mark Geragos at Los Angeles County Superior Court in Los Angeles on Aug. 25, 2009, during his sentencing for assaulting his girlfriend Rihanna. (Associated Press)
Barbadian singer Rihanna performs during the first stop of her "777" worldwide tour at the Plaza Condesa in Mexico City on Nov. 14, 2012. (Associated Press)
Cover art for Rihanna's "Unapologetic" (Associated Press/Island Def Jam Music Group)
Barbadian singer Rihanna performs during the first stop of her "777" worldwide tour at the Plaza Condesa in Mexico City on Nov. 14, 2012. (Associated Press)
Barbadian singer Rihanna performs during the fifth stop of her "777" worldwide tour at the E-Werk club in Berlin on Nov. 19, 2012. (Associated Press)
Barbadian singer Rihanna performs during the fifth stop of her "777" worldwide tour at the E-Werk club in Berlin on Nov. 19, 2012. (Associated Press)
