Ordered 1.5 size up and it's great! The only sad thing is that I wore to the pool and the stitching turned green... so sad!! TT^TT
Also...it is not very cushioned so it will make ur feet very tired after only a little while of wearing. And because of lack of more cushion it makes my heels HARD and DRY :-/ yes it's not a pretty picture my fellow amazon buyers...but I still wear em coz I like em ..even tho they are pretty hard on my feet. :-/