Kilted inheritance? How true is it really?

[CMcG]

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Regardless of its origins, Western wear is uniquely (North) American and, unlike a t-shirt and jeans, can run the gamut from very informal to very formal, just like the kilt. I would venture a guess (I admit I'm not well traveled enough to know for sure) that the rest of the world (except perhaps for Canadians and Mexicans) sees these things as American, too.

Probably correct. As a Canadian, I see Western wear as being North American and not specifically from the USA.