If you are familiar with Posen's work, you know the sizes. You may want to down-size. This size 8 barely fit onto my size 2 form, so I'm listing it as an XS. Measurements below. Incredible texture and structure like Zac Pozen does so well. Look at the seaming and how it accentuates your curves! The fabric keeps its shape. When you put on the dress, you first have to zip up the inner structural layer. Once that is done, the regular zipper is easy - you are already tucked in nicely. Never will you feel there is a possibility this dress will fall down! 60% Acetate 36% polyester 4% spandex Note the word "ZAC" has been crossed out. Awesome dress! Laying flat: Pit to pit 17 pit to hem length 32 smallest measure (without stretching) waist 14 widest measure (without stretching) hips 18