Rihanna a rock star on Victoria's Secret catwalk - Article Photos 1/7

Singers Justin Bieber, Rihanna and Bruno Mars celebrate during the finale of the 2012 Victoria's Secret Fashion Show on Wednesday Nov. 7, 2012 in New York. The show will be Broadcast on Tuesday, Dec. 4 (10:00 PM, ET/PT) on CBS. (Photo by Evan Agostini/Invision/AP)