Usher, Taylor Swift and Justin Bieber backstage at Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Usher, Justin Bieber, Z100, Jingle Ball
Usher, Taylor Swift and Justin Bieber backstage at Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Usher, Justin Bieber, Z100, Jingle Ball
Usher joins Justin Bieber during a performance at Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Usher, Justin Bieber, Z100, Jingle Ball
Usher joins Justin Bieber during a performance at Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Jordin Sparks, Z100, Jingle Ball
Jordin Sparks on stage at Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Jay Sean, Z100, Jingle Ball
Jay Sean attends Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Jay Sean, Z100, Jingle Ball
Jay Sean performs during Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Adam Lambert, Z100, Jingle Ball
Adam Lambert performs during Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
John Mayer, Taylor Swift, Z100, Jingle Ball
John Mayer and Taylor Swift perform during Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Justin Bieber, Z100, Jingle Ball
Justin Bieber attends Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Leighton Meester, Z100, Jingle Ball
Leighton Meester attends Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Pitbull, Z100, Jingle Ball
Pitbull attends Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
Pitbull, Z100, Jingle Ball
Pitbull performs during Z100 Jingle Ball 2009 at Madison Square Garden in New York, NY December 11, 2009.
