Ryan Seacrest, left, and singer Alicia Keys introduce Justin Bieber during the second night of KIIS FM's Jingle Ball at Nokia Theatre LA Live on Monday, Dec. 3, 2012, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
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Ryan Seacrest, left, and singer Alicia Keys introduce Justin Bieber during the second night of KIIS FM's Jingle Ball at Nokia Theatre LA Live on Monday, Dec. 3, 2012, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
