Michael Lauren Call Top in Black. - size XS (also in ) Michael Lauren Call Top in Black. - size XS (also in ) 100% rayon. Lace-up sleeve detail. MLAU-WS521. ML 6319 CRP. 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.