I take a 7.5 and ordered an 8 and they fit perfect. Note- I have a Narrow foot. I do not think they would be suitable for people with a wide foot. I bought the champagne color and the clear. The clear glitter isn't as shimmery as the champagne.. but the clear glitter doesn't shed sparkles and the champagne does. Either way both pretty I want to buy yet another, as you can't beat the bang for the buck. They don't really have any foot support but I think thin inner sole would do the trick. They are incredibly pretty - especially the champagne.