So, this is an expensive shoe, as well as brand.  I'm a bargain shopper, which includes being cheap at times, but this year I decided to get my kids some good summer shoes, especially my three year old since he had $20 shoes similiar to this last summer, but his feet were really stinky.

This is a good quality shoe, all 3 of my kids didn't want to take them off.  I ordered a size up for each of them, and this is a little long at the toe, and because they run a tiny bit wide, the extra toe space makes them seem a bit floppy.  Overall, however, they are fantastic looking.  I wish they gave shoe measurements by the inches of the insole...

Here are the actual measurements of the shoes we got:

Toddler/Little Kid size 12M: Inside sole measurement from the tip of the toe to the heel: 6 1/8"

Little Kid Size 2M: 8"

This is the actual size (as exactly as I could measure) of the inside of the shoe where the foot goes.  I took a blank piece of paper and traced each of my children's feet (if they could not giggle & wiggle) and measured both feet from the longest part to the heel.  On some children it's the big toe and others it's the second toe.  Use the larger of the two feet to size a shoe, and typically a 1/2" of space is the right amount from the toe to the end of the shoe.  I hope this helps!