LAS VEGAS, NV - DECEMBER 31: (EXCLUSIVE COVERAGE) Singer Bruno Mars arrives for his New Year's Eve performance at The Bank nightclub at the Bellagio Hotel and Casino on December 31, 2011 in Las Vegas, Nevada. (Photo by Angela Weiss/WireImage)
LAS VEGAS, NV - DECEMBER 31: (EXCLUSIVE COVERAGE) Singer Bruno Mars arrives for his New Year's Eve performance at The Bank nightclub at the Bellagio Hotel and Casino on December 31, 2011 in Las Vegas, Nevada. (Photo by Angela Weiss/WireImage)