Angelina Jolie, Brad Pitt and John Travolta will present awards at the Oscars.
A full list of the stars who will hand out trophies at the prestigious event on Sunday has been released on Monday and features the cream of Hollywood, including Bill Murray, Harrison Ford, Samuel L. Jackson and Kevin Spacey, among others.
Oscar producers Craig Zadan and Neil Meron said in a statement: "We are very excited that the Hollywood community will be turning out in force for Sunday's Oscar ceremony.
"We sought to include a tremendous diversity of stars to represent not only this year's nominees, but the legacy of the motion picture business as well."
The Academy Awards will be hosted by Ellen DeGeneres this year, and she is already planning to make fun of her audience, singling out Best Actor nominee Mathew McConaughey to be the butt of some laughs.
She said: "It's a great year to host, there are great movies nominated and fun people in the audience for me to play with. I'm not going to hurt anybody, but it will be fun. I kinda know everybody too: Julia [Roberts] is my friend, Meryl [Streep] is hilarious, Leo [DiCaprio] is fantastic. I did [movie] 'EDtv' with Matthew McConaughey, and I'll definitely have jokes with him."