Star presenters at the Oscars 2012

Angelina Jolie: The 36-year-old actress who has turned director with In the Land of Blood and Honey will be presenting an award. Jolie bagged the Best Supporting Actress award early in her career for her performance in Girl, Interrupted. She was nominated for Best Actress in 2009 for Changeling.

Halle Berry: The former Bond girl also joins the list of star presenters this year. Halle Berry won Best Actress in 2001 for her performance in Monster's Ball, becoming the first African-American actress to do so. Her emotion filled acceptance speech narrowly beats her other famous Oscar moment, the last time she presented an award in 2003, when she was scooped up into an inpromptu and on stage kiss by Best Actor winner Adrien Brody.

Cameron Diaz : The Charlie's Angels star has a big release coming up in What to Expect When You're Expecting and Gambit, and is a red carpet favourite every year.

Jennifer Lopez: Musician and actress JLo, currently a judge American Idol, will bring her trademark glamour to the Oscar stage.

Tom Cruise: The actor had a big budget release with Mission: Impossibe - Ghost Protocol and another coming up in musical Rock of Ages. He is a three time Oscar nominee - twice nominated for Best Actor in Born On The Fourth Of July and Jerry Maguire, and once for Best Supporting Actor in Magnolia.

Penelope Cruz: The Spanish actress, who won the Best Supporting Actress Award for her role in Vicky Cristina Barcelona, joins the impressive list. She was also nominated for her performances in Volver and Nine.

Emma Stone: The star of Best Picture nominee The Help rocketed to fame last awards season with her role in Easy A. She will be next seen in The Amazing Spider-man with Andrew Garfield.

Ben Stiller: Funnyman Ben stole the show in 2010 when he appeared dressed as Na'avi from Avatar to present the award for Best Makeup. With any luck he'll make a grand entrance this year too.

Tina Fey: The 30 Rock creator and star joins fellow funny people Will Ferrell,Chris Rock, The Muppets and the cast of Bridesmaids in the presenters lineup.

The Bridesmaids Cast: Rose Byrne, Ellie Kemper, Melissa McCarthy, Wendi McLendon-Covey, Maya Rudolph and Kristen Wiig ? from the hit comedy Bridesmaids will be presenters at the awards. This will be their first Oscar show appearance. McCarthy has been nominated in the Best Supporting Actress category.

Will Ferrell and Zach Galifianakis: In what promises to be a very funny Oscar ceremony, The Hangover star Zach Galifianakis will make his debut appearance with Will Ferrell for whom this will be the fourth time as presenter.

Chris Rock: The actor, who had hosted the 77th Academy Awards in 2005, will be one of the presenters.

The Muppets: Miss Piggy and Kermit the Frog will be presenters at the 84th Annual Academy Awards.

Bradley Cooper: The Hangover star is also last year's People's Sexiest Man and we're always happy to see him.

Tom Hanks: Two-time Oscar winner and Governor of the Academy will return as a presenter at the 84th Academy Awards. He has won two consecutive Oscars in 1993 and 1994 for his performances in Philadelphia and Forrest Gump.

Michael Douglas: Veteran actor Michael Douglas, who is recovering from throat cancer, has been added to the list of presenters at the Oscar ceremony. The 67-year-old is tipped to announce the Best Picture award.

Douglas won Best Actor for his performance in Wall Street in 1987. He also produced One Flew Over The Cuckoo's Nest which won the Best Picture award in 1975.

Milla Jovovich: The Three Musketeers star hosted this year's Scientific and Technical Awards on February 11.

Meryl Streep: Actress Meryl Streep, who has been nominated for the Best Actress Oscar for her work in The Iron Lady, is also going to be one of the presenters at the 84th Academy Awards. This is her 17th Oscar nomination. The Julie & Julia actress, bagged a Supporting Actress Oscar in 1979 for her role in Kramer vs. Kramer and the Best Actress award for Sophie's Choice in 1982.

Christian Bale: Last year's Best Supporting Actor for The Fighter will do the honours this year. We were disappointed that Bale chose to show up last year sporting a scruffy beard and looking nothing like his usual suave self. Hopefully this year it will be different.

Colin Firth: The British actor swept Best Actor awards last year as a stammering King George VI in The King's Speech will be back to hand out an award this year.

Melissa Leo: Last year's Best Supporting Actress for The Fighter will present this year. She also won the Golden Globe and Screen Actors Guild Awards.

Natalie Portman: Lauded by critics and fans alike for playing a troubled ballerina in Black Swan, last year's Best Actress will hand over a statue this year.