The Princess Diaries (2001)
A socially awkward but very bright 15-year-old girl being raised by a single mom discovers that she is the princess of a small European country because of the recent death of her long-absent father, who, unknown to her, was the crown prince of Genovia. She must make a choice between continuing the life of a San Francisco teen or stepping up to the throne. princess, high school, based on novel or book, grandparent grandchild relationship, heir to the throne, royalty, social outcast, fictitious country, based on young adult novel