She is just one of the many people who has been inducted into the infamous "Balmain Army" that is basically just a group of models who hang out with Balmain's Creative Director Olivier Rousteing and look fabulous in Balmain while doing so. Last night, Rousteing celebrated his belated birthday in Los Angeles with his army of famous friends, one being the youngest member of the Kardashian/Jenner clan. Kylie Jenner wore a white Balmain dress and shared plenty of photos on Instagram.

Jenner's all-white dress was signature of Rousteing's style, featuring long sleeves, embellished shoulders, an almost-floor-length hem, and showed plenty of skin through the various caged cutouts. Jenner was joined by her sisters, including Kim, Kourtney and Kendall, and mom Kris, and posed frequently with Rousteing himself. Apparently, Rousteing and Jenner have quite the little love affair, because Rousteing recently told GQ that she is his favorite person on Instagram. Which is kind of a big deal (at least in my opinion) because it gives Jenner some serious credit in the fashion industry.

Between the Balmain x H&M collection and the crazy Paris party post-runway show, Balmain has been getting a lot of attention lately, and Jenner has been extra supportive as of late, wearing Balmain on plenty of occasions.

Aside from last night's look, she wore Balmain x H&M earlier this week to celebrate the fashion show that took place in New York City.

Nicholas Hunt/Getty Images Entertainment/Getty Images

Back in May, Jenner wore a nude, long-sleeved Balmain dress to the MTV VMA's, where she also debuted her beautiful bangs (a look that I think she should keep).

Frazer Harrison/Getty Images Entertainment/Getty Images

She isn't the only Jenner who seems to have a penchant for Rousteing's creations. Kendall is often spotted alongside Rousteing and BFF Gigi Hadid wearing all things Balmain. In fact, Jenner and Hadid are often spotted donning Balmain together.

Slaven Vlasic/Getty Images Entertainment/Getty Images

Must be nice to be a member of the Balmain Army...

Want more Kardashian beauty tips? Check out the video below and be sure to subscribe to Bustle’s YouTube page for more hacks and tricks!