I wear an 8 and in the store I had tried on another Kamik boot and the 9 was going to be a snug fit. However, this 9 was too big. I was really sad as the boot is cute! There was one small problem issue, on the backside, above the heal, it seemed as if it was going to dip down a little after breaking in and that may be painful on my heal. I did not have time to order the 8, however I think I may have needed an 8.5, which they do not come in the half sizes.