Kourtney Kardashian, Kylie Jenner and Jennifer Lopez Celebrate Olivier Rousteing’s Birthday

Balmain x H&M Featuring the Backstreet Boys
High profile model girl squad modeled the Balmain x H&M Collection.

Balmain designer, Olivier Rousteing was feted over the weekend by a bevvy of famous beauties that included Kim and Kourtney Kardashian, Kris, Kylie and Kendall Jenner and Jada Pinkett Smith and her two kiddos, Jaden and Willow Smith.

The French designer celebrated his 30th birthday in style in the Hollywood Hills with a star-studded group that also included his various model muses and close friends Cara Delevingne, Abbey Lee Kershaw, Rosie Huntington-Whiteley, Constance Jablonski and Angela Lindvall.

Jennifer Lopez was stunning in a selfie she posted with Kylie Jenner, in a picture that barely seemed to indicate any age difference between the two. Singer Mary J. Blige and Kylie Jenner’s rapper boyfriend, Tyga were also in attendance.

Olivier’s collection for H&M, Balmain x H&M, is scheduled to launch in two weeks.