I told my students that I had a crush on her when I was 16. Some of them suggested that I should make her a fanart, and I wondered why I didn't think about that. So here it is. You can watch the making-of video in my Livestream Channel. Creamy Mami by Akemi Takada & Yuuko Kitagawa.
It's from a 1980s anime called Creamy Mami; where a young girl uses magic to transform into an older-self (the girl seen here). She names the older-self "Creamy Mami", and becomes popular singer (I think).