I think she has to learn that kilts aren't just formal wear in the way a tuxedo or a ball gown would be. I wear kilts formally and casually; yes you will see me dressed for a special occasion in my bright red and white tartan kilt with Argyle jacket, silver banded sporran, the flashes, sgian-dhu etc. but if I'm just going out to the shops I'll wear a self colour or dark tartan kilt with matching hose, a plain leather sporran, no flashes on the garters and no sgian-dhu, and team it with a polo top or in winter a fleece jacket.