KISS 108's Jingle Ball 2014 - Show

In This Photo: Charli XCX, Iggy Azalea
Iggy Azalea (L) and Charli XCX perform onstage during KISS 108’s Jingle Ball 2014, presented by Market Basket Supermarkets at TD Garden on December 14, 2014 in Boston, Massachusetts.
(Dec. 13, 2014 - Source: Taylor Hill/Getty Images North America)