Taylor Swift attends the iHeartRadio Jingle Ball 2014 at Madison Square Garden on Dec. 12, 2014 in New York City.
Taylor Swift attends the iHeartRadio Jingle Ball 2014 at Madison Square Garden on Dec. 12, 2014 in New York City.
Ariana Grande performs at the iHeartRadio Jingle Ball 2014 at Madison Square Garden on Dec. 12, 2014 in New York City.
Iggy Azalea & Charli XCX perform at the iHeartRadio Jingle Ball 2014 at Madison Square Garden on Dec. 12, 2014 in New York City.
Pharrell & Gwen Stefani perform at the iHeartRadio Jingle Ball 2014 at Madison Square Garden on Dec. 12, 2014 in New York City.
Rita Ora attends the iHeartRadio Jingle Ball 2014 at Madison Square Garden on Dec. 12, 2014 in New York City.