I ordered size 8 on 6pm.com (about $40, much cheaper than what it is going for on Amazon). I usually wear 7.5, but they were out of this size. I was SO excited to get the beautiful shoes, but they did not fit AT ALL. The shoe is constructed such that the straps are not elastic--the back straps simply sagged down under my heel (though my heels are a bit narrow). So, make sure that you order the exact right size, or maybe even smaller.