Popsugar Fashion Balmain Olivier Rousteing's 30th Birthday Party Olivier Rousteing's Epic 30th Birthday Puts All Other Parties to Shame October 26, 2015 by Hannah Weil McKinley View On One Page Photo 14 of 17 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 14 Kate Hudson shimmered in a gilded minidress. Previous Next Start Slideshow BalmainOlivier Rousteing