Avatar: The Last Airbender is supposed to be over the span of one year. And though they don't mention having a birthday or anything, I think they look a little older by the end of season 3 than in season 1.
Wasn't there a show called "All Grown Up" where the kids from "Rugrats" were older?
There was. But I was thinking more like progressive. The rugrats went from toddlers to pre teens. I mean the gradual transitioning I think would be interesting.
Anime tends to be more like this than western animation.
Hannah Montana? XD they go to college and progress in high school to junior, senior, etc.
First of all OP said cartoon show. Secondly, shut up.
Sorry, must've missed that. :/