LACAUSA Crochet Slip Dress in Black. - size S (also in XS) LACAUSA Crochet Slip Dress in Black. - size S (also in XS) 100% pima cotton. Hand wash cold. Unlined. Knit fabric. Open knit hem detail. LACR-WD83. LA30154. LACAUSA is born of the unique space where city, country, desert and ocean converge, Los Angeles.