Western Animation: Generation O!
was a cartoon from 2000-2001 about the life of a popular eight year old rock star
named Molly O! (Yes, with the exclamation mark
. It's her actual surname.)
Most episodes dealt with the fact that, despite being famous and acclaimed, she was still a child who had to obey her parents and follow the rules, much to her displeasure; and her struggles to fit in in school. ("What, your ears aren't pierced? Doesn't matter if you're a rock star. You are a Loooser!")