z100 Jingle Ball lineup announced

Demi Lovato, Kelly Clarkson, Pitbull and others will also hit the stage for the annual holiday concert at Madison Square Garden.

On Friday (October 21), radio station Z100, with the help of pop star Demi Lovato announced the lineup for their 2011 Jingle Ball concert. Lady Gaga will be headlining the big event. The holiday concert will take place on Friday, December 9, at New York City's Madison Square Garden.

Lovato, who is also hitting the stage at Jingle Ball, helped announce the lineup at the official kickoff party at the Aéropostale store in Times Square, where she also performed. The singer took the stage in front of a crowd filled with her fans (a.k.a. Lovatics) and sang four songs. Lovato sat down with MTV News before the big event and told us just how thrilled she is to be a part of the big show.

"I just know I'm performing at Jingle Ball and that I'm really excited," Lovato said. "I'm going to the Aéropostale store and I'm announcing the Jingle Ball lineup."

Tickets for Z100's Jingle Ball go on sale November 1.

so basically the line up goes:

Lady Gaga
Demi Lovato
LMFAO
David Guetta
Pitbull
Kelly Clarkson
Gym Class Heroes
Hot Chelle Rae
Foster the People

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