NEW YORK, NY - DECEMBER 13: 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... more 
NEW YORK, NY - DECEMBER 13: 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. (Photo by Larry Busacca/Getty Images for Clear Channel) less 
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Getty Images | Photo By Larry Busacca / Getty Images for Clear Channel
Sat, Dec 14, 2013 12:27 AM EST