"William & Kate: Celebrating a Royal Engagement" by Robin Nunn is a hardcover book written in English that celebrates the royal engagement of Prince William and Kate Middleton. The book delves into the details of the special day and reflects on the significance of the union between the two individuals. With a focus on the couple's journey and their future as a royal family, this book is a tribute to their romance and commitment to each other and their duties to the monarchy.