Tom_Q wrote:There is always the great and fabulous (and unfortunately unfinished) Beauty Undone:
viewtopic.php?f=11&t=3992
Every single aspect of the popular teen slowly turns into being fake one way or another. So it's less of her trying to reverse a magic downgrade with clothes and make-up, but instead the curse is turning her genuine features into such tricks.
It's been well over 7 years since last update. I'm still waiting, still hopeful.
And while it's a lot of a stretch for the concept you are asking, there is also Fitting in Around Christmas
viewtopic.php?f=11&t=9242
It takes years for the main character to regain (at least partially) her previous life after being magically turned into a low-class lout from English Midlands
Thanks TomQ, I'm glad to see you recommended Beauty Undone. That is one of my all-time favorites!