My daughter received a pair of Carter's rain boots from her aunt for Christmas. She absolutely loves them! They are bright and colorful and very girlie. She even wants to wear them in the heat of the summer when it isn't raining and when it's 90 degrees outside.
These boots are cute, but very functional as well. They have little loops on the tops that can be used to pull the boots on. They are made of rubber (or a rubbery material) and I have never taken them off to find my daughter's feet wet so they are very waterproof.
They are sized a bit large, which makes sense because kids will likely wear socks underneath them, but it is something to keep in mind.
I would highly recommend a pair of these boots for your little one. We get compliments on them whenever she wears them (which might be why she likes wearing them so much!).