Update: Beyonce, Zac Efron, Vanessa Hudgens and Judd Apatow are in
Will a "Twilight" star (or two) appear?
As HitFix confirmed exclusively, Robert Pattinson will be appearing on the telecast. Now, both of Hollywood's hottest under 25 stars? That's another matter entirely, but producer Larry Mark told E!Online there will be a presence "and on more than one occasion."