I had been thinking recently of this very question -- but in a different way; nothing to do with "respect" for other people's cultures etc.
I'd heard there was some country & western dancing club here and thought of going along for some exercise.
What would they think of the kilt?
Since I would be a beginner, yet already know how to dance, would they think I was trying to show off?
Since I run a Scottish dancing club, would they think I was there only to try and kidnap their members?
I have heard that some American dancers are very strict about costume (long sleeves & jeans for men, wide frilly skirts for the girls...), so would I be simply breaking the rules by turning up in my everyday clothes?

Martin