NWT, only worn once for try-on. Size 6, UK size 10. Approximately 39.5 inches in length and 26 inches around, with adjustable tie back. Moderately stretchy material. This size was just a bit tight on me. Perfect dress for a concert or event! May be styled as strapless or halter. Low back with lace tie up is adjustable and so flattering. Comfortable for dancing, etc. (Personal pics show size 8 in the same dress)