Using Sandra's Fast Fit book, I'm still wondering whether my fit concern is full hips or a small waist – there's a 15″ difference between natural waist and full hip. In making the determination of which fit issue it is, she recommends looking at the proportion of your hips to your upper body. So here's my question: Is the proportion determined by hip width compared to outside-shoulder width, or is it hip width compared to cross chest (high chest measure from arm crease-to-arm crease)???