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