Rachel Bilson: Fabulous at the Teen Choice Awards

Adding her glamour to the red carpet, Rachel Bilson was on hand for the 2011 Teen Choice Awards in Universal City, CA on Sunday (August 7).

The former "OC" star received a warm welcome as she walked the Gibson Amphitheatre red carpet before heading inside ahead of the evening ceremony.

Hosted by Kaley Cuoco, the 2011 Teen Choice Awards air live on FOX from 8-10PM ET while featuring performances by Selena Gomez and The Scene, Demi Lovato, will.i.am and OneRepublic.

Among the stars slated to take the stage to dole out surfboards to the night's lucky winners are Taylor Lautner, Cameron Diaz, the Kardashian sisters, Justin Bieber and Victoria Justice.

Meanwhile, "The Twilight Saga: Eclipse" leads the pack with 13 nominations, followed by "Glee" (9), "The Vampire Diaries" (7) and "The Hangover Part II," Taylor Swift and Selena Gomez (6).