There is a button on the top of the back and a small band around the waist.
This dress is 94% polyester and 6% spandex. Model is 5'6" wearing a small. Dress fits true to size.
Small: 40.5 inches
Medium: 41.5 inches
Large: 42.5 inches
Care: Hand wash cold. Do not bleach. Hang or line dry.