Disney songstresses Demi Lovato and Selena Gomez have been billed to take the duty as presenters at the upcoming American Music Awards.
The other stars appointed to present awards at the November 22 ceremony are Kristen Bell and Colbie Caillat, reports E! Online.
On another news, Timbaland will deliver his vampire-themed song "Morning After Dark" at the annual event.
The powerhouse producer/rapper is going to share stage with his two collaborators, Nelly Furtado and French new artist SoShy.
Celebrating its 37th annual show, 2009 American Music Awards will be opened by Janet Jackson who will perform a medley of her hit singles.
Special honoree is one of the musical guests Whitney Houston who will be handed with International Artist Award.
Rihanna, Eminem, Jay-Z, Lady GaGa, Mary J. Blige, Keith Urban, Alicia Keys, Jennifer Lopez, Black Eyed Peas, Kelly Clarkson, Carrie Underwood, Green Day, DAUGHTRY and Adam Lambert are also scheduled to perform.