I'm typically an X-small with a 25-inch waist. I would say this dress is true to size. There is some give with the corset-tie back and the designer says if you are in between sizes to size down. It may fit a size 2/small. The fit is beautiful, and you feel like a princess in this dress. I am 5' 2" and wore 4" heels and the dress just grazed the floor, so may be more suitable for someone taller but will work for shorter as well. Great for a black-tie wedding, gala, etc!