Zellweger, Zeta-Jones and Queen Latifah received nominations for their performances in the film. Jones and Queen Latifah were nominated for their supporting roles; Jones took home the Oscar that year. Zellweger, who was nominated for her lead performance in the film, has been nominated three times, and won in 2003 for her supporting role in "Cold Mountain."
The "Chicago" stars join a stellar list of previously announced Oscar presenters including Mark Wahlberg, Ted, and “The Avengers” cast members Robert Downey Jr., Samuel L. Jackson, Chris Evans, Jeremy Renner and Mark Ruffalo; returning 2011 Oscar winners Jean Dujardin, Christopher Plummer, Octavia Spencer and Meryl Streep; special guests Joseph Gordon-Levitt, Daniel Radcliffe, Channing Tatum and Charlize Theron; and performers Adele, Dame Shirley Bassey, Norah Jones and Barbra Streisand.
Oscars for outstanding film achievements of 2012 will be presented Feb. 24 at the Dolby Theatre at Hollywood & Highland Center. Seth MacFarlane will host the event, which will be broadcast live on the ABC Television Network.