Oscars 2012: Angelina, Ambanis walk the Red Carpet

Angelina Jolie looked stunning in black as she posed on the red carpet.

Michelle Williams, who has been nominated for her work in My Week With Marilyn in the Best Actress category, looks pretty in red.

Actor Sacha Baron Cohen, dressed as his character General Aladeen from the film The Dictator, arrives for the Oscars.

Meryl Streep wears a golden dress on the big night, perhaps to match it with the Oscar statuette that she may win later in the day?

Jennifer Lopez adds glamour to the red carpet.

Milla Jovovich chooses white for the red carpet.

Actress Jessica Chastain, who has been nominated in the Best Supporting Actress category for her work in The Help, arrives.

Actress Viola Davis shows off another side to her on the red carpet. She has been nominated in the Best Actress category for The Help.

Viola is accompanied by her husband Julius Tennon.

George Clooney arrives with his stunning girlfriend Stacy Keibler. Will he take home the Oscar for his work in The Descendants?

Mexican actor Demian Bichir poses with Stefanie Sherk. He has been nominated in the Best Actor category for A Better Life.

Gwyneth Paltrow chooses white for the red carpet as well. 

Brad Pitt enters the Kodak theatre in a black tux.

Rooney Mara has been nominated in the Best Actress category for her work in The Girl With The Dragon Tattoo.

Penelope Cruz looks stunning in her grey Tulle strapless gown. 

Sandra Bullock chooses a backless white and black gown for the evening.

Cameron Diaz strikes a pose while onlookers and mediapersons admire her.

The Artist's Jean Dujardin gets a kiss from his wife Alexandra Lamy. He has a good chance of winning the Best Actor award at the Oscars.

Anil and Tina Ambani was spotted on the red carpet with Steven Spielberg and his wife Kate Capshaw Spielberg.

Spielberg's Oscar-nominated War Horse has been co-produced by Reliance Entertainment.