LOS ANGELES, CA  [Wednesday Aug.8.2007]  /Mix103FM.com/ -- Kelly Clarkson and Avril Lavigne will be performing at the 2007 Teen Choice Awards, Sunday, August 26th (8:00-10:00 PM ET live/PT tape-delayed) on FOX.

Clarkson will sing "Never Again," and Lavigne is slated to perform her hit "Girlfriend."

Nominees include Linkin Park, Ne-Yo, Daughtry, Hinder, Lloyd, Diddy, Sean Kingston, Chris Brown, Maroon 5, Fall Out Boy, Akon, Lifehouse, Robin Thicke, Dashboard Confessional and Hillary Duff, who will also be busy with hosting duties alongside Nick Cannon.

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