I'm a true size6.5 and ordered my usual size. My right foot is bigger than left, so when I tried on the left one it feels like it was made for my left foot, very comfy but the right one is very snuggle. I walked in the house for 20 minutes the right toebox starts to loosen up already and the left one feels like it could slip out if I wear them out. My suggestion is to buy the ones that make you feel snuggle cuz they'll stretch out quickly. They are super sexy!!!