These shoes are incredibly adorable! But... they run large. We were going out of town, and my daughter needed an all-purpose shoe-- I had just had her foot measured (4.5) and confidently ordered the 4/5 size. They arrived just in time but then, to my dismay, they were huge and wouldn't even stay on her foot! I ended up buying another pair of cute Crocs (color changing) while we were away, a 4/5 that we were able to try on in the store- and they fit perfectly. Both are toddler Crocs, both are made in China (*sigh*) so I don't know what to tell you.  I guess if you can't try them on and have to order, don't order them in a pinch! They are still super cute, and will be great in a year or so, I guess.