Michael Costello x REVOLVE Cosmo Gown in Black. - size XL (also in L, M, S, XS, XXS) Michael Costello x REVOLVE Cosmo Gown in Black. - size XL (also in L, M, S, XS, XXS) Self: 53% viscose 44% rayon 3% spandex Lining: 97% polyester 3% spandex. Made in China. Hand wash. Unlined. Hidden back zipper closure. Halterneck styling with lobster clasp closure Plunging neckline. Side and back cut-out Lightweight satin fabric with side seam slit. MELR-WD901. MCD1175 F23. A specialist in statement gowns, Michael Costello has dressed the likes of Beyonce, Cardi B, Kim Kardashian, and Lady Gaga. He became a household name in 2010 after appearing on Project Runway, and has since established himself as a designer of sexy show-stoppers. Think draped, jewel-toned fabrics alongside curve-flattering silhouettes with high slits and open backs. Guided by the principle that everyone should feel confident when they dress, Michael Costello is meant to be worn by women of all shapes and sizes. It is the ideal label for those nights that call for something striking and unapologetic to strut, spin, and sashay in.