I am usually a 71/2 i went with the size 8 and it is a perfect fit,i have narrow feet so if your feet are wide going up a whole size may be a good idea,i absolutely love this shoes i got them in nude patent and now i want to get more colors,it is so sexy and sophisticated looking,you will not regret it. I also find it to be very comfortable,I walked around the mall for 4 hours in them yesterday and my feet were not sore.