Others had said these run large but I went ahead and got my standard size 8. I'm a solid 8 and never before have I needed a smaller size. These were too big. However, I added heel pads from the drug store to make them tighter/stay on my feet. Had I returned for a 7.5, I'm not sure they would have been comfortable for all day wear...but I didn't feel like taking the time to find out! UPDATE 9/29: I wore these shoes 3 times. All only to work at a desk job with basic walking around, nothing major. On day 3, right before a big presentation, one of the heels broke off on my way to the meeting!! No way to fix. Cheap shoes. If you're desperate need & don't care if they last these are your shoes!