Justin Bieber

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** FILE ** Justin Bieber arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

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This Sept. 30, 2012 photo released by the Las Vegas News Bureau shows singer Justin Bieber performing in concert at the MGM Grand Garden Arena in Las Vegas, Nev. (Associated Press)

This photo combo shows (from left) entertainer Justin Bieber, an iPhone, and Secretary of State Hillary Rodham Clinton. This year's Beloit College Mindset List, a nonscientific compilation, is meant to remind teachers that college freshmen, born mostly in 1994, see the world in a much different way. (Associated Press)

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** FILE ** In this Jan. 26, 2012, file photo, Justin Bieber appears for a hand-and-footprint ceremony honoring musician Michael Jackson in front of Grauman's Chinese Theatre in Los Angeles. (AP Photo/Matt Sayles, File)

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This CD cover image released by Island Def Jam Music Group shows the latest release by Justin Bieber, "Believe." (AP Photo/Island Def Jam Music Group)

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** FILE ** In this Oct. 1, 2011, photo, pop sensation Justin Bieber performs during his "My World Tour" concert at Foro Sol in Mexico City. Bieber will perform in a free open-air concert at the Mexico City's main historic plaza, the Zocalo, on Monday, June 11, 2012. (AP Photo/Marco Ugarte)

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**FILE** Justin Bieber attends a hand and footprint ceremony honoring musician Michael Jackson in front of Grauman's Chinese Theatre in Los Angeles on Jan. 26, 2012. (Associated Press)

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In a photo made Jan. 26, 2012, Justin Bieber is seen during a hand and footprint ceremony honoring musician Michael Jackson in front of Grauman's Chinese Theatre in Los Angeles. Justin Bieber is wanted for questioning by Los Angeles County Sheriff's investigators after a photographer complained Sunday May 27, 2012, of being roughed up by the pop star at a shopping center. (AP Photo/Matt Sayles)