LOS ANGELES (AP) -- Justin Bieber, Emma Stone, Tyra Banks and Josh Duhamel are honoring teens who give back to their communities.
Nickelodeon announced Tuesday that each star will pay tribute to a teenage volunteer at the fourth annual TeenNick HALO Awards. The awards are presented to young people who are "helping and leading others."
Nick Cannon, who created the awards show, will serve as host and executive producer. The awards are set to tape Nov. 17 at the Hollywood Palladium and will air as a 90-minute special on Nov. 19.
The four honorees come from across the country and range in age from 16 to 19. One started an organization to help outfit low-income teenage girls. Another makes and distributes gift bags for breast cancer patients undergoing chemotherapy.