These can run a tad big if you don't realize to get the size you're actually in.  My daughter wears an 11.5.  I typically buy larger, a 12, but they were much too big.  Their 12s are meant to work until the foot is a 13, so the 11 does actually go to a size 12.  We returned and got these in an 11 and they're perfect!  I always watch amazon for a great deal in these - if you pick your child's size, then go through and see what ones are discounted.  We end up with cute sandals that will last all summer for a deal!