This was an interesting read, if you want to know more about princesses, including fictional ones. It was not integral to the series however. Though it did have snippets written from each character like the Princess Lessons book did, I found this one to be a little less about the characters and more about the history of the princesses. That being said, I did really enjoy it, especially learning more about princesses I did not know of. Michael's contributions were very interesting to me as well. If you're a fan of the series or enjoy the history of princesses you would enjoy this book.