Video: Stars shine at Teen Choice Awards

Justin Bieber performs onstage at the Teen Choice Awards on Sunday, July 22, 2012, in Universal City, Calif. (Photo by John Shearer/Invision/AP) Show caption
Justin Bieber performs onstage at the Teen Choice Awards on Sunday, July 22, 2012, in Universal City, Calif. (Photo by John Shearer/Invision/AP)

Justin Bieber and the "Twilight" Saga win big at the 2012 Teen Choice Awards

Justin Bieber and the "Twilight" Saga win big at the 2012 Teen Choice Awards.