I purchased two wrap dresses in a size 18. Both fitted perfectly but you could size down if you have an hourglass figure and want a tighter fit around the waist. The fabric is wonderful, it has a slight weight to it and washes and dries without the need to iron. I loved the length, I'm 5'4" and it ends just past the knee. My only negative is the inner tie ribbon could be slightly thicker as I can see it wearing quickly. These dresses are my first Elvi purchases so I don't know if they are part of a basic wardrobe they continously sell but I would purchase them in seasonal colours yearly as they are perfect for all occasions and make great maternity/nursing dresses.