Pictures: Who won what at the Oscars ceremony 2014
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This year's Oscars ceremony was hosted by talk show host Ellen DeGeneres, who made the most of the occasion by talking selfies with the stars.

Roaming the audience to rope in a few celebrities, this selfie featuring Bradley Cooper, Brad Pitt, Julia Roberts, Meryl Streep and Jennifer Lawrence has become the most retweeted ever with more than two million people posting it on their profiles.

Pharrell Williams took to the stage to perform his nominated song Happy from Despicable Me 2, and left the stage to dance with fellow nominees in the crowd, including Meryl Streep, Amy Adams and Lupita Nyong'o.

Peter Del Vecho, Jennifer Lee and Chris Buck accepted the Oscar for best animated feature film for Disney musical Frozen, about a magical icy princess. The film's second award went to Kristen Anderson-Lopez and Robert Lopez for best song, Let It Go.

This year's best actress Oscar went to Cate Blanchett for Blue Jasmine. She paid tribute to her fellow nominees including Dame Judi Dench and Amy Adams.

The best actor prize went to Matthew McConaughey for Dallas Buyers Club. He was congratulated by fellow nominee Leonardo DiCaprio before being handed his Oscar by last year's best actress winner Jennifer Lawrence.

Lupita Nyong'o took home the best supporting actress Oscar, beating Jennifer Lawrence and Julia Roberts to take the prize.

Pink performed Over the Rainbow as part of a tribute to The Wizard of Oz's 75th anniversary, before DeGeneres reappeared dressed as the fairy godmother. She also ordered pizza to feed guests.

The ceremony's star-studded presenting line-up included Jamie Foxx and Jessica Biel, Joseph Gordon-Levitt and Emma Watson and Penelope Cruz and Robert De Niro.

Gravity was the biggest winner on the night, winning seven awards. Here, director Alfonso Cuaron accepts the best director Oscar from actors Angelina Jolie and Sidney Poitier.