Okay, but Kidagakash skews the average so sharply that she's proof of the need for weigthing.

Also, are Alice & Jane actually considered princesses? Jane is Lady Greystone and I could accept her for that, but Alice is just a kid. And if direct adaptations count, why not Wendy? Why not Tiger Lily (who counts if Pocahontas does)? Or Dejah Thoris, the titular "Princess of Mars"?