These Ugg boots are adorable. My granddaughters love them and seem to find them very comfortable. The only negative is that these boots are quite pricey for boots for a 4 and 6 year old.
Nordstrom is the place to go if you are looking for an UGG boot in kids or adults. They cater to every style and color. What they don't have, can be found and mailed to you in a couple of days.
Back to these cute boots (pink UGG) with the back bows, my daughter loved them. They kept her feet warm. They didn't stain from the snow. I was really impressed my daughter is 2 years old and can be very hard on shoes and UGG held up really well.