Miley Cyrus will perform her new song Party in the USA at the 2009 Teen Choice Awards. The show will be on Monday, August 10th and will air on FOX.
Other celebrities slated to appear are David Beckham, Zac Efron, Megan Fox, Cameron Diaz, Jennifer Morrison, Keke Palmer, Alexis Bledel, Chace Crawford, Leighton Meester, Ellen DeGeneres, Ashley Tisdale, and the cast of Twilight.
Source: Teen Choice Awards.