Taylor Swift performs onstage during Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
John Mayer and Taylor Swift perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
Usher and Justin Bieber performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Usher and Justin Bieber perform onstage during Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City.
John Mayer and Taylor Swift perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
Usher performs with Justin Bieber onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
John Mayer and Taylor Swift perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
John Mayer and Taylor Swift perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
Singer Ke$ha attends the Z100's Jingle Ball 2009 Pre-Show at Hammerstein Ballroom on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Usher and Justin Bieber performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
Usher and Justin Bieber perform onstage during Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City.
John Mayer and Taylor Swift perform onstage during Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Singer Jay Sean attends Z100's Jingle Ball 2009 Pre-Show at Hammerstein Ballroom on December 11, 2009 in New York City.
John Mayer and Taylor Swift perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
John Mayer and Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
John Mayer and Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Jordin Sparks and Justin Bieber perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Jordin Sparks and Justin Bieber perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Jay Sean performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Ke$ha performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Ke$ha performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Ke$ha performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Jordin Sparks and Justin Bieber performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Singer Ke$ha attends the Z100's Jingle Ball 2009 Pre-Show at Hammerstein Ballroom on December 11, 2009 in New York City.
Singer Ke$ha performs at Z100's Jingle Ball 2009 Pre-Show at Hammerstein Ballroom on December 11, 2009 in New York City.
Singer Justine Biber performs at Z100's Jingle Ball 2009 Pre-Show at Hammerstein Ballroom on December 11, 2009 in New York City.
Singer Orianthi performs at Z100's Jingle Ball 2009 Pre-Show at Hammerstein Ballroom on December 11, 2009 in New York City.
Jay Sean performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
General view of atmosphere during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
General view of atmosphere during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Radio personality Elvis Duran and actor Peter Facinelli onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December...
Jordin Sparks and Justin Bieber perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Boys like Girls performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Radio personality Elvis Duran onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Isaac Slade of The Fray performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York...
Jay Sean performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Ke$ha performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
General view of atmosphere during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Pitbull performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Jordin Sparks and Justin Bieber performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Ke$ha performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
John Mayer and Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...
Justin Bieber performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Justin Bieber performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Taylor Swift performs onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New York City.
Jordin Sparks and Justin Bieber perform onstage during Z100's Jingle Ball 2009 presented by H&M at Madison Square Garden on December 11, 2009 in New...