Washed once, never worn Sizing per tag: Bust: 82cm Height: 160cm For reference, I am bust 37in and can still zip the dress up, although it is quite tight, so I'd say this fits more like a S since I am a solid M in clothes. The waist is around 27.5in measured along the bottom of the waistband before stretching, and the elastic adds another 6 inches. There is a zipper closure at the side with a shirred waist and elastic at the top back so sizing is flexible.