Oscars 2014: Stars party to celebrate the Academy Awards

Brad Pitt, "12 Years A Slave" Oscar-winning screenwriter John Ridley and Gayle Ridley attend the Oscars Governors Ball on March 2, 2014, in Hollywood, Calif.
Kevork Djansezian/Getty Images

Celebrities kept the Oscar festivities going all throughout Hollywood's biggest night.

The 86th Academy Awards were playing at the Elton John AIDS Foundation's viewing dinner party in Los Angeles, but the real entertainment came from the performances, celeb watching and the surreal moments of the evening.

Lady Gaga, members of the Kardashian clan (including new mom Kim), Steven Tyler, Britney Spears, Heidi Klum, Quincy Jones, Whoopi Goldberg and more were among the celebrities taking part in the 22nd annual event, which raises funds for those afflicted with HIV and AIDS.

The party was held in a cavernous tent a few miles away from where the actual awards were taking place, at Hollywood's Dolby Theatre. Huge screens adorned the venue as party-goers watched the Oscar action.

"If Pharrell Williams doesn't win best song, then I'm (expletive) going home early," John bellowed to the crowd after Williams performed his nominated song "Happy" (Williams didn't win, but thankfully for the crowd, the award was handed out late in the ceremony, making John's threat moot).

During the night, there was an auction of key items; Neil Patrick Harris jokingly offered to make out with the top bidder (and go a bit further than that) for an item featuring tickets to his upcoming Broadway show, "Hedwig and the Angry Inch."

The evening raised $5.1 million for the foundation, according to organizers.

The party didn't end there.

A sea of Oscar statuettes filled the Governor's Ball following the awards show as winners chatted, ate and celebrated with the film industry's elite at the official Academy Awards party, hosted by the Oscars organizers.

Winners also got their statuettes engraved with their names on a stop in a string of parties around town.

Singer John Legend provided the entertainment, singing hits including "Ordinary People," while guests ate a gourmet meal by celebrity chef Wolfgang Puck.

An excited John Ridley, winner of best adapted screenplay for "12 Years a Slave," entered the party clutching his Oscar, which he said was "overwhelming and humbling."

"It's heavy, but heavy with the weight of a career and responsibility and history. It's a weight I never thought I would have in my hands," he said.

"12 Years a Slave" cast member and rising Kenyan star Lupita Nyong'o has been the toast of the industry this awards season and celebrated her win for best supporting actress with her brother and mother Dorothy, who said she was "so happy" for her daughter.

Leonardo DiCaprio, whose "The Wolf of Wall Street" came away empty-handed at the Oscars, did a quick few rounds of the room before making a swift exit.

His "Wolf" co-star Jonah Hill, accompanied by his mother, shared jokes with Julia Roberts, while Kate Hudson, clad in a cream Versace gown, chatted to Joseph Gordon-Levitt.

84-year-old "Nebraska" star June Squibb, who was nominated for best supporting actress but lost out to Nyong'o, said she was just happy to be at the glitzy show and after party.

"I love every minute of it, I loved sitting there and just feeling like I'm part of it," she said.

Bette Midler, who performed for the first time in her decades-long career at the Academy Awards, said she had fun during her performances and was left a little emotional by it.

Elsewhere, actress Naomi Watts and Robert De Niro were among the celebrities at the annual Vanity Fair party.

Ellen DeGeneres, looking as relaxed as she did hosting, chatted intently with Sacha Baron Cohen. Her wife, Portia Di Rossi, was by her side, talking to Ryan Seacrest. Spike Lee and Edward Norton attempted to catch up, shouting at each other over music that included the appropriate "Celebration."

In one corner, three veteran stars created a memorable photo op that had several partygoers pulling out their cameras. Nominee Bruce Dern ("Nebraska") was joined by Mickey Rooney on one side and 1995 Oscar winner Martin Landau ("Ed Wood") on the other.

Jared Leto, who passed his supporting actor Oscar among reporters earlier Sunday, was as generous at the party. The "Dallas Buyers Club" star invited two statuesque blondes to appreciate the trophy's heft, and they appeared duly impressed - with one inviting her boyfriend over to share the experience.

Pink's performance of "Over the Rainbow" during a 75th anniversary salute to "The Wizard of Oz" drew compliments. "It was an honor," she replied to one well-wisher.

In the crowd of some 1,000 partygoers, one nominee who didn't claim a trophy still looked like a winner: "American Hustle" star Jennifer Lawrence, who lost in the supporting actress category to Nyong'o.

Lawrence had changed from the elegant red Dior dress she wore for the ceremony into a sexy sheath that sparkled with what appeared to be tiny mirrors. She couldn't be overlooked, trophy or not.