What's Disney Princess
Disney Princess is a media franchise owned by The Walt Disney Company, originally created by Disney Consumer Products chairman Andy Mooney in the late 1990s and officially launched in 2000. The original eight princesses consisted of Snow White, Cinderella, Aurora, Ariel, Belle, Jasmine, Pocahontas, and Mulan. The franchise spotlights a line-up of fictional female heroines who have appeared in Disney animated feature films.... The franchise currently includes twelve female protagonists from eleven different Walt Disney Animation Studios films and one Pixar film as each of whom is either royal by birth, royal by marriage, or considered a "princess" due to their significant portrayal of heroism in their film. Although the specific criteria for becoming a member of the franchise is vague for the most part, most often there are "unofficial" Disney Princesses who do not join the line-up either because marketing is not successful, or they are too young and so on. In the cases of Anna and Elsa, they have spawned their own franchise because of how successful their movie was, despite being paired with the Disney Princesses from time to time.
Most recently, the line-up has expanded to include Tiana, Rapunzel, Merida and Moana after the successes of their respective films.