These are really awesomely cute shoes. They do run a little big. I usually wear a anywhere from an 8.5 to a 9.5 comfortably. I got these in a 9 but probably would've been fine with an 8. So, I would say buy a size down. This is coming from someone who usually buys a size up and has a little wider of a foot. These are a bit wider than the shuffle. No matter though, they seem to really adapt to your foot. The only reason I'm giving them 4 stars is because they don't seem like they will hold up very long, which is too bad considering they are otherwise great and not very cheap. I do recommend them.