Z100's Jingle Ball 2013 Presented by Aeropostale - Show
Tegan (R) and Sara (L) perform with Mary Lambert of Macklemore and Ryan Lewis during Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on December 13, 2013 in New York City.
(Dec. 12, 2013 - Source: Theo Wargo/Getty Images North America) more pics from this album »
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