Yes Prince Charles (here we call him the Prince of Wales of course ) is indeed a snappy dresser especially when wearing the kilt. It's not something that he appears to have been able to install in his sons alas which is a great pity.

I would love to see him in a Welsh cilt sometime on a visit to the Principality.

As to Charles Edward Stewart, I have just finished reading a biography of him and there is no evidence that he ever wore a kilt again following his flight after the '45 or that he ever wore one before he landed.