Black XS curvy Bralette from cosabella. here is what is listed on their site: Our amazing Soire mesh gets a fresh reboot in the Soire Confidence Collection with glossy trim details, flat lock seams and a modern look. This lightweight semi-sheer Soire Confidence Curvy Bralette is the smooth, barely-there wireless bralette designed for those with full busts with smaller bands. Designed for small bands with fuller cup sizes. Wireless bralette. Lightweight and comfortable sheer mesh lays smooth. Side slings and power mesh lining for extra bust support. Wide, adjustable straps for all-day comfort. Hook and eye back closure. Body: 100% polyamide Lining: 85% polyamide, 15% elastane size xs fits a US size 30dd, 30f, 32dd and UK size 30dd, 30e, 32dd has been worn and washed a few times (air dried), band may have stretch a bit, see photos for measurements