That is a great question, and one I can't answer myself. I'll leave that to others, because I have the same sort of thinking. If I were to wear the same pair of trousers two days in a row, I would feel like I was wearing dirty underwear [I've always been a regimental chap, even in trousers]. I ironed and put on the same kilt I wore yesterday [my only kilt as yet] and it seems as clean as it was when I put it on the day before. I think the kilt stays cleaner than trousers.

~James