This also applies if you are a small, junior or petite size in womens clothing. Sometimes it can be less expensive to buy large or Xlg clothing in the children's section. :
UGG® Cozy II Scuff Slipper | Nordstrom
UGG Jona Boot - Kids' - Free Shipping | DSW
UGG Kids' Classic Ultra Mini Boots (Youth) | Dillard's
Ugg Black Suede Lined Lace Up Neumel II Boots Youth Size 5 Shoes 1017320K | eBay
UGG Australia Classic Mini II Big Kids Boots Size 1 - Walmart.com