NWT, 100% silk Size 0 (XS) in Erica Tanov sizing; here is their sizing description: “Erica Tanov clothing is sized 0, 1, 2, 3. 0 is equivalent to size 2/4 or XS 1 is equivalent to 6/8 or S 2 is equivalent to 10 or M 3 is equivalent to 12 or L” Please note the color of this dress is Limoncello, which is no longer sold on their website. It is the same dress shown on the model, but in a different color. (The model is wearing Chartreuse, which is currently available on their website)