Bad boyfriends, make sure your athletic cup is well secured. This year's Teen Choice Awards, airing Aug. 26 on Fox, will feature live performances by punk princess Avril Lavigne and two-time Grammy winner Kelly Clarkson. Avril will croon "Girlfriend," KC will belt out "Never Again" and guys everywhere will be sure to buy their honeys flowers immediately afterwards.

Among the celebs on tap to appear on the show are Zac Efron, America Ferrera, Ryan Reynolds, Rob & Big, Jessica Alba, Megan Fox, Miley Cyrus, Jared Padalecki and Taylor Kitsch.