Los Angeles - Darren Criss of Glee and Lucy Hale of Pretty Little Liars will co-host Teen Choice 2013, which will include a performance by country group Florida Georgia Line.
The show, that will air on 11 August, celebrates teen favorites in television, music, film, sports, fashion, comedy and the Internet on Fox.
Sandra Bullock, Kerry Washington, Miley Cyrus, Jim Parsons, Adam DeVine and Gabby Douglas were announced Thursday as the latest stars set to appear on the show airing live. They'll be joined by Lily Collins, Max Greenfield, Liam Hemsworth, Demi Lovato, Ian Somerhalder, The Wanted and Rebel Wilson, among others.
Nominated for four Teen Choice Awards, Florida Georgia Line will perform Cruise from their debut album.
One Direction and Paramore also are set to perform.