2010 Teen Choice Awards were held on August 8, introducing a lot of new categories now separated into "Movie", "TV", "Music", "Summer", "Fashion" and "Other". The show aired on August 9, 2010 on Fox, co-hosted by Katy Perry, who also performed, and C... (more)hris Colfer, Kevin McHale, Cory Monteith, and Mark Salling from Glee. Alongside Katy, performancers included Jason Derülo, Travie McCoy, Justin Bieber and Diddy-Dirty Money.

Katy Perry