Last night, H&M celebrated its newest designer collaboration with Maison Martin Margiela. Celebrities including Kayne West, Sarah Jessica Parker, and Julianne Moore flocked to the party in downtown Manhattan. The collection was inspired by the archives and is filled with high-impact silhouettes and dramatic outerwear. Watch on to see and hear more about H&M's newest collaboration! On Allison McNamara: Shoshanna dress, Kendra Scott earrings, House of Lavande bracelet. Hair and makeup by Kasia Bohos. Additional reporting by Allie Merriam.