The "Who Was?" series is a popular non-fiction book series designed for young readers, typically targeting ages 8-12 (grades 2-7). The books offer biographical information on historical figures, presented in a way that is engaging and easy for young readers to understand. The focus on this particular volume is on Diana, the Princess of Wales. There are accurate illustrations and detailed historical information, and the text is easy to read. Designed to introduce young people to the most famous and photographed woman of the 20th century, this is an engaging read for young readers interested in the British Royal Family and Pop Culture.