Z100's Jingle Ball 2013

Miley Cyrus attends Z100's Jingle Ball presented by Aeropostale on Friday, Dec. 13, 2013 in New York. (Photo by Charles Sykes/Invision/AP)

Pitbull attends Z100's Jingle Ball presented by Aeropostale on Friday, Dec. 13, 2013, in New York. (Photo by Charles Sykes/Invision/AP)

Actress Katie Holmes introduces Selena Gomez at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec. 13, 2013,...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Katie Holmes attends Z100's Jingle Ball presented by Aeropostale on Friday, Dec. 13, 2013 in New York. (Photo by Charles Sykes/Invision/AP)

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Actress Katie Holmes introduces Selena Gomez at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Singer Selena Gomez performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in New York. (phot...

Actress Katie Holmes introduces Selena Gomez at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec.13, 2013 in...

Singer Miley Cyrus performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec. 13, 2013 in New York. (Phot...

Singer Miley Cyrus performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec. 13, 2013 in New York. (Phot...

Singer Miley Cyrus performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec. 13, 2013 in New York. (Phot...

Singer Miley Cyrus performs at Z100's Jingle Ball 2013, presented by Aeropostale, at Madison Square Garden on Friday, Dec. 13, 2013 in New York. (Phot...

NEW YORK, NY - DECEMBER 13: Anna Kendrick attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garde...

NEW YORK, NY - DECEMBER 13: Austin Mahone attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Jason Derullo attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Dr. Oz attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garden in Ne...

NEW YORK, NY - DECEMBER 13: Harry Connick Jr.and Jill Goodacre attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in...

NEW YORK, NY - DECEMBER 13: Harry Conick Jr. attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Cr...

NEW YORK, NY - DECEMBER 13: Kelly Bensimon attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Cred...

NEW YORK, NY - DECEMBER 13: Nicole "Snooki" Polizzi attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York C...

NEW YORK, NY - DECEMBER 13: Enrique Iglesias attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Cr...

NEW YORK, NY - DECEMBER 13: Austin Mahone attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Harry Connick Jr.and Jill Goodacre attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in...

NEW YORK, NY - DECEMBER 13:Kelly Ripa attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit: R...

NEW YORK, NY - DECEMBER 13: Hayley Williams of Paramore attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madiso...

NEW YORK, NY - DECEMBER 13: Taylor York, Jeremy Davis and Hayley Williams of Paramore attends the Z-100 New York Jingle Ball on December 13, 2013 in M...

NEW YORK, NY - DECEMBER 13: Jason Derulo attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit...

NEW YORK, NY - DECEMBER 13: Jason Derulo attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit...

NEW YORK, NY - DECEMBER 13: Jason Derullo attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Jennifer "JWoww" Farley attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York C...

NEW YORK, NY - DECEMBER 13: Lindsay Lohan attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garde...

NEW YORK, NY - DECEMBER 13: Jennifer "JWoww" Farley attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York C...

NEW YORK, NY - DECEMBER 13: Ryan Seacrest attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Katie Holmes attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garden...

NEW YORK, NY - DECEMBER 13: Katie Holmes attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garden...

NEW YORK, NY - DECEMBER 13: Kellan Lutz attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit:...

NEW YORK, NY - DECEMBER 13: Kellan Lutz attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit:...

NEW YORK, NY - DECEMBER 13: Ryan Seacrest attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: R Kelly attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit: RTN...

NEW YORK, NY - DECEMBER 13: Lindsay Lohan attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garde...

NEW YORK, NY - DECEMBER 13: Ryan Seacrest attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Ryan Seacrest attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credi...

NEW YORK, NY - DECEMBER 13: Miley Cyrus attends the Z-100 New York Jingle Ball on December 13, 2013 in Madison Square Garden in New York City. Credit:...

NEW YORK, NY - DECEMBER 13: Anna Kendrick attends the Z-100 New York Jingle Ball presented by Aeropostale on December 13, 2013 in Madison Square Garde...