LACAUSA Seashell Mini Dress in White. - size S (also in ) LACAUSA Seashell Mini Dress in White. - size S (also in ) 100% viscose. Hand wash cold. Fully lined. Flared sleeves. LACR-WD76. LA30140 + LA30071. LACAUSA is born of the unique space where city, country, desert and ocean converge, Los Angeles.