I loved that she would change her costume's design so often. And then at some point it stopped. You'd think they forgot she was an heiress or something.

It made complete sense to me that Jan would change her outfits all of the time.
Why wouldn't she? She designed most of them herself, and she should be showcasing them.
They did change her outfit a couple years ago, but the whimsy is gone.

Just like Marvel Comics.