I am usually a small/ medium, and this fits me perfectly. I am a 27 waist and 32DD and wear a small. This is a Long and elegant dress. The model is 5'10" and is also wearing a size SWaist 24Bust 32Hips 35.5 Self: 95% poly, 5% spandexLining: 100% polyPartially linedHidden side zipper closureFront belted accent piecesSide seam slitImported