Also expected to help introduce nominees and hand out prizes are Bradley Cooper, Penelope Cruz, Benedict Cumberbatch, Viola Davis, Robert De Niro, Zac Efron, Sally Field, Harrison Ford, Jamie Foxx, Andrew Garfield, Jennifer Garner, Whoopi Goldberg and Joseph Gordon-Levitt.
Booked to appear as well are Goldie Hawn, Chris Hemsworth, Kate Hudson, Samuel L. Jackson, Angelina Jolie, Michael B. Jordan, Anna Kendrick, Matthew McConaughey, Ewan McGregor, Bill Murray, Kim Novak, Tyler Perry, Brad Pitt and Sidney Poitier.
"We are very excited that the Hollywood community will be turning out in force for Sunday's Oscar ceremony," Zadan and Meron said in a joint statement. "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."
Ellen DeGeneres is to serve as the host of the event, which will air live on ABC.