Meryl Streep, best actress winner for The Iron Lady, and Jean Dujardin, best actor winner for The Artist, pose backstage at the 84th Academy Awards in Hollywood.
French director Michel Hazanavicius, best director winner for The Artist, poses with his Oscar backstage
Producer Thomas Langmann, Jean Dujardin, director Michel Hazanavicius, James Cromwell, Berenice Bejo, Penelope Ann Miller, Missy Pyle, with dog Uggie, hold their Oscars after winning best picture for The Artist
William Joyce and Brandon Oldenburg celebrate winning the Oscar for the best animated short film with The Fantastic Flying Books of Mr. Morris Lessmore
Nat Faxon, Jim Rash and Alexander Payne pose backstage with their awards for best adapted screenplay for The Descendants
Presenter Melissa Leo poses next to Christopher Plummer, winner of the Best Actor in a Supporting Role award for his role in Beginners
Presenter Christian Bale poses with Octavia Spencer, winner of the Best Actress in a Supporting Role award for her role in The Help
The black-and-white film The Artist was the big winner at Sunday's 84th Annual Academy Awards, the Oscars, capturing best picture and major awards for its director and lead actor.
Frenchman Jean Dujardin won the Oscar for Best Actor for his role in the film about a struggling silent-era movie star, while Michel Hazanavicius was honored as Best Director.
Meryl Streep won her third Oscar, taking the award for Best Actress for her portrayal of former British Prime Minister Margaret Thatcher in The Iron Lady.
Christopher Plummer made history by becoming the oldest actor to win an Oscar. The 82-year-old won the Best Supporting Actor award for his role in Beginners as an elderly widower who embraces his homosexuality.
Octavia Spencer received a standing ovation when she won the award for Best Supporting Actress for her role in The Help. She was one of two actresses nominated in the category from the film, which tells the story of African American maids in the racially segregated southern United States of the 1960s.
Another big winner was Hugo, a visually rich 3D tribute to a French film pioneer. It won five awards, including cinematography, art direction and sound editing.
In the best foreign language film category, the prize went as expected to Iran's A Separation. Directed by Asghar Farhadi, it tells the story of the difficult lives of a couple seeking a divorce. It already has won numerous awards this year.
The award ceremony by the American Academy of Motion Picture Arts and Sciences in Hollywood honors last year's best films, actors, directors and producers, and is viewed by hundreds of millions around the world.