Not a simple answerIt is not a simple conversion. What makes “junior” clothing different than “misses” clothing is the cut. Junior clothing is made for pre-teen and young teen girls who really don’t have much of a shape yet. Even the larger sized will be cut more straight, not allowing for curves. Sometimes the pants and skirts will be a little shorter, too. Misses clothing is cut to allow the clothing to maintian its shape while allowing room for a chest and hips. Regular misses clothing is cut to fit a slightly taller person than regular junior clothing. On top of that, there is no standarized guidelines for sizing female clothing. If you have shopped different stores and different brand names, you know that you may be one size according to one store and a different size according to another.