Magical Angel Creamy Mami (1983)

Yuu Morisawa is a 10 year old girl living in her parent's crepe shop in Creamy-ga oka. Alien Pino Pino rewards her for helping him find his way home by offering a magic wand for an entire year. Two cat-like aliens named Nega and Poji help her discover her new powers. She transforms into an older self with a few magic words and is discovered by impresario Shingo Tashibana who needs a singer for a TV show. Under the name Creamy Mami, Yuu starts a very successful career at Parthenon Productions as an Idol pop singer and becomes more famous than the studio's other jealous star Megumi Ayase. However, she still has to cope with her daily life as a school girl which proves to be quite difficult considering the boy she loves, Toshio Ohtomo is Creamy Mami's number one fan. Yuu must preserve her real identity at all cost. Should anyone see her transform, she would loose her powers and remain Creamy Mami forever.