Teen Choice 09

MILEY CYRUS IS GOING TO PERFORM !!! AND THE CASTS OF "TWILIGHT" AND "GLEE" WILL BE THERE TOO!!!! DON'T MISS THE SHOW- MONDAY, AUGUST 10, ON FOX

Miley Cyrus is doing her newest single, "Party in the U.S.A.," at TC 09. That's right, the pop Mega Star is all set to sing for you!

And, of course, you won't want to miss Dare the Jonas Brothers! That's going to be hilarious!

And, it's official. The casts of "Twilight" (Robert Pattison, Kristen Stewart, Taylor Lautner, Ashley Greene, Nikki Reed and Kellan Lutz) and FOX's new comedy series GLEE (Lea Michele, Cory Monteith, Jenna Ushkowitz, Chris Colver, Amber Riley and Kevin McHale) will appear