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There are parties, then there are the over-the-top bashes held by none other than socialite and partier extraordinaire Paris Hilton.

Over the weekend, the hotel heiress welcomed a star-studded possey—including the likes of Katy Perry, Iggy Azalea, Sofia Richie, Bella Thorne, and Chiara Ferragni—to her Beverly Hills mansion for the most fabulous girls' night in.

Just days ago, the original It girl of the aughts proclaimed herself the queen of the selfie, so it was no wonder that the group documented their shenanigans with plenty of photos and videos.

The "Bon Appetit" songstress took to social media to gush about Hilton—and the giant mosaic of Hilton's face that adorns one of the walls. "The realest queen in the game," the pop star wrote alongside one of many clips of the group exploring the star's renowned dog palace, visited her gigantic closet, posed alongside her cardboard cutout.

Hilton definitely approved and made sure to send the love back by taking to Instagram to share a video (above) that shows Perry getting close and intimate with the mosaic portrait. She captioned it, "Waking up to this today made my day. Love you @KatyPerry! You are such a beautiful magical #Queen!"

And just when we thought we couldn't get any more jealous that we missed out on the girls' night in of a lifetime, the DJ upped the FOMO factor by sharing a clip of the group's "Lit AF" evening.

Check out more of the ladies' shenanigans below!