It’s a beautiful dress I bought and love, but can’t wear because I got pregnant and it doesn’t fit my new body. It’s a 2 piece, as in, there is an under-layer dress, because the top layer is see-through. It’s got an elastic waist so there’s a size variability, so it is considered one-size. It will fit anyone from small to large, but fit can differ. It is NWT. Never worn. Perfect condition.