LACAUSA Babe Slip Dress in Blue. - size M (also in ) LACAUSA Babe Slip Dress in Blue. - size M (also in ) 100% rayon. Unlined. Adjustable shoulder straps. Shirred drop waist. LACR-WD91. LA30163. LACAUSA is born of the unique space where city, country, desert and ocean converge, Los Angeles.