Sister In Law thinks Kilts are not acceptable everyday attire.

[Morris at Heathfield]

I told him kilts were around before pants, and that (for his personal beliefs) well known people from history didnt wear pants either.

Eh, not really. You could argue that the kilt, in the form of the belted plaid, dates back to the late 16th century, but you could also argue that denim jeans, in the form of sailors' dungarees, date back to roughly the same period. Trousers go way back into prehistory, at least in Eurasia. The Greeks and Romans regarded them as the attire of barbarians (including the Celts, you know ), but when the barbarians took over (the Germanic tribes this time), trousers suddenly became fashionable. Somehow the Gaels missed the memo; if they hadn't, this site would undoubtedly not exist.

Either that, or we'd be wearing kilts over trousers.