Michael Lauren Valentino Shift Dress in Black. - size XS (also in ) Michael Lauren Valentino Shift Dress in Black. - size XS (also in ) 100% rayon. Dry clean recommended. Unlined. MLAU-WD237. ML 8116 NBC. The designers behind Lauren Moshi take their comfortable pieces to a new level. With Michael Lauren, expect a range of lounge-worthy basics for the girl who likes to relax in style.