Marisol

Im not either of these sizes to try for you but according to the Zimmermann size chart, their size 0 is made to fit bust measurement 84cm and waist 65 cm. I measured the dress and it lines up with this with an armpit to armpit measurement of 44 - 45 cm (total around body of 88 - 90 cm) and a waist 33.5 cm (total around the body of 67 cm). If you fit Zimmermann size 8 garments, it does align with their given measurements for that size. If you are unsure, i would suggest you use the measurements given here against a fitted dress you already own to see if it will fit. The dress does not have any stretch.