Z100's Jingle Ball Show

Pharrell Williams (L) and Gwen Stefani perform onstage during iHeartRadio Jingle Ball 2014, hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on December 12, 2014 in New York City.
(Dec. 11, 2014 - Source: Dimitrios Kambouris/Getty Images North America) more pics from this album »