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Iggy Azalea during Y100's Jingle Ball 2014. (Getty Images)
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Ariana Grande performs onstage during Y100's Jingle Ball 2014. (Getty Images)
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Jason Derulo performs onstage at Y100?s Jingle Ball 2014. (Getty Images)
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Clik here to view.Pharrell Williams performs onstage during Y100's Jingle Ball 2014. (Getty Images)
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Clik here to view.Jessie J performs onstage during Y100's Jingle Ball 2014. (Getty Images)
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Clik here to view.Meghan Trainor performs onstage at Y100's Jingle Ball Village. (Getty Images)
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Clik here to view.Becky G performs at Y100's Jingle Ball 2014 at BB&T Center. (Getty Images)
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Clik here to view.Kiesza performs onstage during Y100's Jingle Ball 2014. (Getty Images)
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Clik here to view.Asha Sing performs at Y100's Jingle Ball Village. (Getty Images)
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Clik here to view.Roxy Romeo, Valentine of Y100 and Prince Royce attend Y100's Jingle Ball 2014 at BB&T Center. (Getty Images)