Neatorama posted about these great Inchworm Shoes. They expand one full size in half-size increments as your child grows. And they're not that expensive either starting at around $19.
Also in mind are these Robeez Shoes. I really like these because they are soft leather protection from rough surfaces and cold temperatures yet still allow the babys foot to develop a little more freely than having to wear regular toddler shoes all the time. Korey could wear these all the time in or out of the house. They cost around $26.
Koreys going to have to have shoes here real soon. She's growing so fast. Which reminds me how fast Batson kids outgrow shoes. Yeesh!