Character Name:
Princess Helena Josephine Caroline Rinaldo
(You can add more middle names if you want)
Age: 16
Sibling: Princess Addie
Status: Granddaughter of the Queen of England, daughter of the Prince of Wales
Celebrity Using: Anna Popplewell


Relationship with Sister: She protects her sister, and also gets along well with her cousins, her father's sister's children, Princes David and Aaron.
History: Whatever you want, but it has to match Princess Addie's as far as the facts in hers go.

Other than that, go for it.