These shoes are very nice.  Flexible and comfortable enough for play, but pretty enough for dressing up.  These shoes just seemed more "grown-up" then the other Mary-Janes we looked at.  My daughter is just getting into size 3.  Tennis shoes in size 3 fit perfect, but other shoes still seem a bit large and that was true with these as well, so I think the size is right on.  I do not think they run small at all (my daughter does not have a wide or narrow foot--she's right in the middle).