No one throws a party quite like Paris Hilton!

The socialite famously hosted five events across the globe to celebrate her 21st birthday in 2002, and the party is still going strong 10 years later. To fete her 31st birthday, Hilton threw a star-studded masquerade ball on February 16 inspired by the erotic 1999 thriller Eyes Wide Shut (starring Nicole Kidman and Tom Cruise).

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Hilton, who wore a nude sequin-encrusted mini-dress, boasted via Twitter that it was "the most beautiful, amazing, extravagant birthday party ever" and the most fun she's "ever had in my entire life."

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A source tells Us Weekly that "everyone was given a mask" upon their arrival, including A-list guests like Chace Crawford, Stephen Dorff and Emile Hirsch.

Hilton's parents, Rick and Kathy, joined in on the fun, as did her handbag designer sister Nicky, 28. Hip-hop couple Wiz Khalifa, 24, and Amber Rose, 28, danced as Hilton's beau, DJ Afrojack, and her friend, DJ Mr. Best, played the hotel heiress' favorite songs.

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Once the bash ended, Hilton and pals continued to celebrate until the wee hours of the morning. "The after party went on until 7 a.m.," the source tells Us.

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