So much so that Princess Poppy books now have their own page.
For any parents out there who haven't read any Princess Poppy books - try them. They appeal to girls (and their mums) who love the attractive covers. But, within the covers, they are quite moral stories. Playground Princess, for example, has Poppy worried because her new set of friends don't like her best friend Holly and Poppy has the difficult choice of standing up for her friend or staying with the popular girls.