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Kim K, Bieber, MGK Balenciaga's Met Gala After-Party Takes Over NYC!!!

The Met Gala's the time of the year when celebrities dress up like royalty and whisk past their subjects to party the night together in elite fashion ... and this year did not disappoint.

Kim Kardashian showed up to the Balenciaga bash in a superhero-looking outfit Monday night at Cathedrale Restaurant in NYC. It's a Balenciaga getup that seems inspired by Kanye. We got her stepping out of her SUV looking like the lead in Marvel's next blockbuster.

Justin and Hailey Bieber followed. The Biebs is the poster boy for Balenciaga, so it kinda makes sense he hosted the party.

Machine Gun Kelly showed up in a black jacket with roses on his shoulders, and GF Megan Fox looked her typical amazing self in a red dress.

Winnie Harlow made her way inside, all the while smiling. Chance the Rapper wore his signature hat with the #3 ... the 3 reps his third mix tape -- "Coloring Book." Chance left for Rihanna's party at Davide, where he handed out Benjamin to the homeless.

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