Heyyy, Mrs. Carter!

Serving body in a two-piece dress, Beyonce popped her booty and some bubbly while at an uber-exclusive private party. In pics she posted to her Tumblr, Queen Bey can be seen dropping it low while holding a bottle of champagne and a clear plastic cup — clearly, she’s the LIFE of the party.

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In other photos, the SASY mom shows off her super sexy stilettos while strutting her stuff in a parking garage.

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And even Bey’s baby sister and SASY mom herself, Solange got in on the fun in a festive pink suit.

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These Knowles’ sister know how to have fun!