Some Authenticity Advice?

[Calgacus]

I liked that link,
but my guess/experience is, that a young women in the highlands Today is more than likely to wear some kind of jeans and t-shirt/blouse combination for a ceilidh (traditional event) or maybe a dress if it's more formal. To this moment I haven't seen any young Scottish women dressed in something that looks "traditional/historical" outside of reenactments.
Obviously my experience is very limited.

You are quite right, I didn't read the original post carefully enough. A contemporary young woman attending a ceilidh would wear contemporary dress reflecting the level of formality of the function, which could vary from jeans & T-shirt (local village hall ceilidh) to cocktail dress (or I suppose even ball gown?) for a clan gathering. She would not wear any form of modified kilt.

I suggest that Skye researches ceilidhs, as I think that's what he's getting at.