I ordered a size 7 which should have fit me just fine (I can even get away with wearing a 1/2 size smaller in other shoes sometimes), but they're too small. It's definitely a very tight fit even if I'm not wearing any socks and I don't have wide feet at all. I loved them so much though, so I decided to keep them thinking it would be ok with a snug fit and that they'd probably stretch out a little bit with some wear, but now I'm starting to regret my decision because my toes don't stay as warm pressed right up to the ends, and with regular wear my toes are starting to hurt a little from being smushed together.They're super cute though!-- just don't make the same mistake I did and make sure you order a size up from what you usually are.