By Bee Shapiro
Updated Oct 24, 2015 @ 10:00 am
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instagram / kimkardashian

Olivier Rousteing must be riding high. After pulling off a raucous star-studded runway show for Balmain x H&M earlier this week, the baby-faced Balmain designer started the weekend with an bang—that is, with another star-studded unforgettable bash in Los Angeles for his belated birthday.

Flanked by a coterie of Kardashians (Kim and Kourtney), Jenners (Kendall, Kylie and Kris) and Smiths (Jada, Willow and Jaden), Rousteing, 29, was literally Instagram bait. In one shot, he canoodles with Kylie Jenner. In another snap, he created major squad envy posing with all of the above plus Mary J. Blige and Cara Delevingne.

Even the bfs got in on the fashion mood. Tyga joined girlfriend Kylie in matching white. After rocking coordinating letterman's jackets just last week, could it be couples that match together, stay together?