A complete list of winners at the 84th annual Academy Awards:

Best picture: The Artist.

Actor: Jean Dujardin, The Artist.

Actress: Meryl Streep, The Iron Lady.

Supporting Actor: Christopher Plummer, Beginners.

Supporting Actress: Octavia Spencer, The Help.

Animated Feature: Rango

Art Direction: Hugo.

Cinematography: Hugo.

Costume Design: The Artist.

Direction: Michel Hazanavicius, The Artist.

Documentary: Undefeated.

Film Editing: The Girl with the Dragon Tattoo.

Foreign Language: A Separation, Iran.

Make Up: The Iron Lady.

Music, original score: The Artist.

Music, original song: Man or Muppet from The Muppets.

Screenplay, adapted: The Descendants.

Screenplay, original: Midnight in Paris.

Short, animated: The Fantastic Flying Books of Mr. Morris Lessmore.

Short, documentary: Saving Face.

Short, live action: The Shore.

Sound Editing: Hugo.

Sound Mixing: Hugo.

Visual Effects: Hugo.