LOS ANGELES, CA - DECEMBER 05: Singer Rita Ora performs at KIIS FM's Jingle Ball at Staples Center on December 5, 2014 in Los Angeles, California. (Photo by Chelsea Lauren/WireImage)
LOS ANGELES, CA - DECEMBER 05: Musician Shawn Mendes performs at KIIS FM's Jingle Ball at Staples Center on December 5, 2014 in Los Angeles, California. (Photo by Chelsea Lauren/WireImage)
