A string of celebrities and Olympic athletes have partied throughout the night at the Vanity Fair Oscars after part at West Hollywood's Sunset Tower Hotel.
Vases of white, pink and yellow orchids decorated the room, along with bowls of red apples stencilled VF.
By the time Sandra Bullock showed up, gripping her best-actress Oscar statuette and mugging for photographers with husband Jesse James, the party was in full swing.
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Others attending included best-actress nominee Carey Mulligan, who giggled with friends in a corner.
Oscar co-host Alec Baldwin gripped a tumbler of water and joked with Sean Penn.
Hilary Swank and Tim Robbins ate burgers from In-N-Out Burger that were served by waiters dressed in the chain's uniform.
Iraq war drama The Hurt Locker dominated the 82nd Academy Awards, scooping six Oscars including best picture on a historic night in Hollywood.
The powerful movie about a US Army bomb disposal squad in Baghdad blew away the competition, with film-maker Kathryn Bigelow becoming the first woman ever to win the Oscar for best director.
"This really is, there's no other way to describe it, the moment of a lifetime," said Bigelow, only the fourth woman ever to be nominated for the best director award by Academy voters.
The top acting honors went to Hollywood veterans Jeff Bridges for his performance as an alcoholic country singer in Crazy Heart and Sandra Bullock, for her role as a feisty housewife in the sports drama The Blind Side.
It was a perfectly scripted night at the Kodak Theater for Bigelow, whose low-budget film had been locked in a duel with Avatar, the science-fiction epic directed by her ex-husband James Cameron.
The supporting actor awards went to Austria's Christoph Waltz for his portrayal of a sadistic Nazi officer in Quentin Tarantino's Inglourious Basterds, and Mo'Nique, a monstrous parent in harrowing drama Precious.
Mo'Nique's triumph made her only the only the fifth black actress in history to win an Oscar after Hattie McDaniel, Whoopi Goldberg, Halle Berry and Jennifer Hudson.
