This black wrap dress drapes like it was poured! It is perfect for any formal occasion. Its sleek design and flattering fit make it a must-have in your wardrobe. The pit to pit measurement is 18.5 inches, and the waist flat is 15.5 inches. I have done my best to size it at an 8-10. Since it is a wrap dress, it is very forgiving. It ties on the inside as well as the outside. NWOT