If you want it to fit like the model, and like your tops tight fitted, then size down at least 3 sizes. I am usually a medium/small in tops. I wish I ordered an XXS.. AT LEAST. Other then that, the top is gorgeous and I will be getting it tailored to my liking. Waist is 83cm. Hips is 113cm. Boobs is 34DDD. Height is 5'7 with a longer torso.