I wear a store size 14-16, and I am large in the bust and hips. This costume fit well, and actually covered my backside! I wore black tights underneath and some knee high boots that I already had, and the costume was very cute. The sleeve length was pretty good, and I felt that it fit well. My onlycomplaint is that the mask was very small. I wore it anyway, but it was a better fit on my 7 year old daughter.