Fifteen years have passed since the debut of Disney’s based-on-a-book comedy featuring two of Hollywood’s brightest stars (Julie Andrews and Anne Hathaway). The Princess Diaries premiered back in 2001, and would eventually earn a solid $165 million worldwide. “Shut up,” as Princess Mia would say.

To commemorate the 15th anniversary, Disney In Depth recognizes 15 quirky reasons to love The Princess Diaries. Why quirky reasons? Because the Garry Marshall film is full of peculiarities and oddities that are by turns charming and crazy good fun.

We Disney aficionados simply cannot obtain enough neat tidbits of trivia, seeking answers to everyday quandaries that strike us. Fortunately, Disney Editions just released a fine trivia book that puts many questions to rest. Dave Smith, Chief Archivist Emeritus of the Walt Disney Archives, has long been known to help fans with this endeavor in his legendary “Ask Dave” column. Now, Smith, author of this fact-filled title Disney Trivia from the Vault: Secrets Revealed and Questions Answered, has compiled together over 1,000 questions, providing responses and well-explained descriptions as well.

In this edition of Disney In Depth, I’ll impart my thoughts on this book, and also share some of the more unique questions and answers that you can find inside Disney Trivia from the Vault. I’ll give you 23 fun facts. Why 23? If you’re a Disney fan you should know the reason. (1923 is the year the company was founded).

At just over 250 pages, this eight-chapter book, each dedicated to a different aspect of The Walt Disney Company, contains a vast variety of little-known pieces of trivia that you can bring up at social events. Well, I’m not sure how relevant bringing up the “Kids Amateur Dog Show” at Disneyland from the 1960s would be, but would you know about that had you not picked up a copy of this? I don’t think so. The allure of trivia books is that they contain such oddball details, each with fascinating and extensive stories, making this a treasure trove.