Paris Hilton, Doug Reinhardt

Michael Buckner/Getty Images

After the the Killers delivered a killer performance at the Coachella Music and Arts Festival in Indio, Calif., stars partied the night away at the T-Mobile G1 Tone-Def party.

Paris Hilton and her boyfriend, Doug Reinhardt, drank and danced with Paris' sister, Nicky Hilton Rothschild, and her bf, David Katzenberg. At one point, Paris and Nicky hopped up on a speaker and shimmied for the crowd.

As if that wasn't reason enough to holler "Woot!", it was also Carmen Electra's birthday, which she celebrated with a pink-frosted marble cake that she shared with fiancé Rob Patterson.

Adrian Grenier was showing off his new squeeze, a short brunette whom he was spotted holding hands with earlier in the night when they attended the show.

Grenier's Entourage costar Kevin Connolly was spotted hanging out with Taryn Manning at a VIP table.

Jessica Stroup and Dustin Milligan shared a table with Brittany Snow and her boyfriend.

Guests chowed down on Chipotle, Tommy's Burgers, and spiked snow cones. A Coffee Bean & Tea Leaf truck was brought in to perk up late-night partyers like Paris and Doug, who stayed till 3:30 a.m.

A space-age photo booth was set up to capture all the action.

All the while, DJ Momjeans, aka Danny Masterson, was spinning for the excited revelers.

See more pics of your favorite celebs at the music festival in our Bella Coachella gallery

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