Hime-chan's Ribbon

Erika, the princess of the Magic Kingdom, arrives on Earth searching for a human girl who resembles her perfectly. She finds Himeko Nonohara, an unapologetic tomboy, and tasks her with testing a magical hair ribbon-a device that lets Himeko transform into anyone she sees. If the ribbon works, it will prove Erika's worth as the kingdom's future ruler. As Himeko navigates the challenges of her new power, she grows closer to Daichi, the boy who uncovers her secret.