The 40-year-old actress looked stunning, turning heads in an ivory, beaded mini dress and black heels with gold tips.
The star-studded event, hosted by Balmain creative director Olivier Rousteing, celebrated the opening of the fashion house's first L.A. boutique and its collaboration with Beats by Dre, which features Kylie Jenner.
Kim Kardashian West also made an appearance in a show-stopping white bra top and ornate crystal-encrusted skirt. The 36-year-old reality star documented her night out via social media, which included a quick “fashion emergency” behind the scenes.
To see how Kardashian West and her team averted a fashion crisis, watch the video below.