Plaid Underpants Kimono

[FossilHunter]

I got the impression from the article that the kimono was meant to be a piece of fashion art rather than a practical, traditional, garment. That being the case, I can see why she would choose fabrics that evoke tartan, rather than tartan itself. Tartan is expensive and she doesn't mention a connection to any particular clan or tartan so generic plaid and check fabric makes sense as something to evoke an impression of Scotland in clothing without getting too specific.

That's my impression anyway.