Jennie's Hat, by Ezra Jack Keats, was a favorite book when I was a kid. It's the story of Jennie and the hat she receives as a gift from her aunt. She is disappointed with her hat at first when she compares it to the other hats that she sees that are so decorated and beautiful. In the end, hers also become beautiful because of a special relationship she has with some birds. My girls really appreciated the ornate hats made of collage in the pages of this book and that's what I remember about it from my own childhood. It's a rare Ezra Jack Keats book, harder to find but worth looking for.