Catherine, the Duchess of Cambridge, is left in shock as the public exposes a shocking secret about the date of a photo of the princess that the royal family is hiding. The article reveals that there is a hidden significance behind the date of a particular photo of Catherine, which the public has uncovered. This revelation has taken Catherine by surprise, as she was not aware of the secret behind the date. The article hints at a possible scandal or controversy surrounding the photo and urges readers to stay tuned for more updates on this developing story.

Overall, it discusses the shock and surprise that Catherine has experienced due to the public's discovery of a hidden secret related to a photo of the princess.