First of all I would not wear a dress. I would wear the kilt.

I would not risk your job over your attire. Check first and see if any overseers will be ruffled.

Wear it with a short sleeve dress shirt and proper hose - something light-weight but dignified with flashes. You can wear the shirt open at the neck or with a tie depending on what the office culture requires.

Do it with dignity, head held high and a big smile. Remember: 97% of women like men in kilts!