My Little Pony: Princess Luna and the Festival of the Winter Moon by G. M. Berrow is the seventeenth in a series of chapter books published by Little, Brown and Company and the second entry in a four-book miniseries called "The Princess Collection". In this book, Princess Luna finds out about a festival being planned to honor her as a counterpart to the Summer Sun Celebration, but she does not feel comfortable about the attention she will receive.