The King's Speech has won the top Academy Award, for best picture.
The British drama about the efforts of King George the sixth to overcome a crippling stammer picked up four Oscars at the ceremony in Los Angeles.
Colin Firth won best actor for his lead role as the king, Tom Hopper won best director and the film also took the award for original screenplay. Australian actor Geoffrey Rush failed to win a second Oscar for his supporting role as a speech therapist to the king. Many critics considered he had a strong chance.
The 83rd annual Academy Awards ceremony were being held at the Kodak Theatre in downtown Los Angeles.
Natalie Portman picked up the Academy Award for best actress for her role as an unhinged ballerina in Black Swan.
Best supporting actor and actress went to Christian Bale and Melissa Leo for their roles in The Fighter.