Crown Princess Victoria of Sweden
Royal factor: Victoria is the eldest child of King Carl XVi Gustaf. Sweden now allows the eldest child to inherit the throne regardless of gender, so Victoria will become Sweden's queen. She's currently the world's only female heir-apparent.
Relationship status: Married.
Little-known facts: She married her personal trainer Daniel Westling, whom she dated for eight years, on her parent's 34th wedding anniversary on June 19, 2010.