I'm a size 7, ordered a size 8. Returned for a size 9. If they came in half sizes, 8.5 would have been perfect. The 8 pinched my toes, and the 9 is a little too big...At least with the 9 I can put in a shoe insert for more comfort. So without a doubt, order up...AT LEAST 1 size up. Other than that these shoes are impressive. 6 1/2 inches. Yes please. Because of their high platform, they are not bad to walk around in if you already walk in 4 inch heels. I got these for a wedding I'm in and the bride wants the bridesmaids to be the same height: 5'8"...(I'm 5'1") wasn't sure if I would find shoes that would make this little request possible, but here they are!