The historical drama 12 Years A Slave won best picture, its third win at this year's Oscars. The film also won best adapted screenplay and its star, Lupita Nyong'o, won an Oscar as Best Supporting Actress.
Matthew McConaughey bags the best actor award for Dallas Buyers Club. It's his first Oscar win. McConaughey won the award for his performance as a desperate and determined AIDS patient in the film. The other nominees were: Christian Bale, Bruce Dern, Leonardo DiCaprio and Chiwetel Ejiofor.
Cate Blanchett takes home the Best Actress award. It was the sixth Oscar nomination for the Australian actress and her second win after 2005's The Aviator. Blanchett won for her bravura performance as a fragile socialite experiencing a meltdown in Woody Allen's Blue Jasmine.
Alfonso Cuaron gets the award for Gravity, the film's second Oscar award this year. The film also won for original score, sound editing and mixing, visual effects, cinematography and editing.
"Making a film can be a transformative experience. For me it was the colour of my hair," Cuaron said.
Best original screenplay
Spike Jonze for Her.
Best adapted screenplay
Historical drama 12 Years A Slave wins its second Oscar.
Best Original Song
And the best original song Oscar goes to Let It Go from Disney's animated film, Frozen. The song was sung by Idina Menzel, who also lent her voice to the movie. this was the second Oscar gold for Disney's box office hit film. It also won in the best animated feature category.
Best Original Score
Gravity wins its sixth Oscar gold for best original score. The movie, which stars Sandra Bullock and George Clooney, narrates the story of three members of a shuttle crew, who while working outside the craft to repair the Hubble telescope, have a catastrophic encounter with a field of space debris.
Achievement in Production Design
And the Oscar goes to The Great Gatsby. The Leonardo DiCaprio starrer beat American Hustle, Gravity, Her and 12 Years a Slave to win the award.
Best Film Editing
Five out of ten Oscar golds for Gravity, winning its latest for best film editing. The film has won in each category it has been nominated in so far.
Sci-fi thriller Gravity wins its fourth Oscar for Best Cinematography.
Best Supporting Actress
Lupita Nyong'o won Best Supporting Actress award for 12 Years a Slave, earning a standing ovation as she took the stage.
"When I look down at this gold statue, it reminds me of me as a little child that no matter where you're from your dreams are valid," she said after accepting her award.
She bested Jennifer Lawrence, Julia Roberts, Sally Hawkins and June Squibb to win the award.
A tearful Nyong'o paid tribute to her slave character Patsey, saying: "It doesn't escape me for one moment that so much joy in my life is thanks to so much pain in someone else's."
Best Sound Editing
Gravity wins again for best sound editing. That's three Oscar golds for the space thriller so far.
Best Sound Mixing
And the best sound mixing Oscar goes to Gravity; it's second Oscar win out of ten nominations.
Best Foreign Language Film
Italian film The Great Beauty took the award for Best Foreign Language Film. This is the 11th Oscar and 28th nomination for Italy. The movie chronicles the life of a journalist whose success has placed him at the centre of Rome's decadent social world.
Best documentary short subject
The Lady in Number 6: Music Saved My Life is named best documentary short subject.
The award goes to 20 Feet From Stardom! The film, directed by Emmy-award winner Morgan Neville, takes a look at the singers who come of age amid the careers of luminaries like Ray Charles, Tina Turner and Stevie Wonder.
Best live action short film
Helium wins Best Live Action Short Film.
Achievement in film editing
Gravity won its first Oscar of the night for visual effects, out of 10 nominations. The award was announced by Emma Watson and Joseph Gordon Levitt.
Gravity is expected to lead the ceremony in total awards, cleaning up in technical categories like visual effects and cinematography.
Best animated feature film
Disney's box office hit film Frozen took home the Best Animated Feature Film Oscar, beating The Croods, Despicable Me 2, Ernest & Celestine and The Wind Rises. This is Disney's first win in the 14 years of the best animated feature category.
Frozen, a film about a magically icy princess and her sister, features the catchy tween anthem Let It Go, with voicing by Idina Menzel, Kristen Bell and Josh Gad.
Best animated short film
Mr Hublot took home the Oscars for Best Animated Short Film. Matthew McConaughey and a scarily smooth-faced Kim Novak announced the award.
Best Costume Design
Catherine Martin wins Best Costume Design for her work in The Great Gatsby. It's her third win, after two awards for Moulin Rouge, and her sixth nomination.
Meanwhile, Adruitha Lee and Robin Mathews clinched the trophy of best hair and make-up for Dallas Buyers Club about an HIV-positive man. This was the first nomination for the duo.
Best supporting actor
Jared Leto wins Best Supporting Actor for Dallas Buyers Club, beating Michael Fassbender, Barkhad Abdi, Bradley Cooper andr Jonah Hill.
Leto won for his acclaimed, gaunt performance as a transsexual in the Texas AIDS drama.
"This is for the 36 million who have lost the battle to Aids. Tonight I stand here with you and for you," Leto said.
DeGeneres takes the stage
Oscar host Ellen DeGeneres takes the stage at the opening of the 86th Academy Awards, throwing punchline upon punchline to a crowd of Hollywood's A-list stars.
This is the 56-year-old TV personality's second time to host the Oscars.
"Possibility number one: '12 Years a Slave' wins best picture," she said. "Possibility number two: You're all racists."