superdown Brianna Open Back Dress in White. - size XS (also in L) superdown Brianna Open Back Dress in White. - size XS (also in L) 100% poly. Hand wash cold. Partially lined. Embroidered lace details throughout. Back loop button closure with cut-out detail. Hidden back zipper closure. Imported. SPDW-WD58. AUD252 R18. superdown is a contemporary label offering on-demand, on-trend, on-social apparel. Always on the pulse of the latest styles, superdown is the go-to for aspiring, trendy, fashion-loving babes who are #superdown for anything.