Selena Gomez, Justin Bieber and More Hit Z100's Jingle Ball Red Carpet

Z100's Jingle Ball 2010 presented by H&M has been kicked off on Friday, December 10 at Madison Square Garden in New York City with a number of big stars in attendance. Fresh from their dating rumor, Selena Gomez and Justin Bieber made appearances that night, but they hit the red carpet separately. Backstage, the Canadian singer was even spotted posing next to Kim Kardashian. Selena herself