Just for the record, to anyone reading here looking into a kilt for reenacting, DON'T YOU DARE!!!!!!
Any example of a Confederate in a kilt known would be a one off in all likelihood! Plus the most famous memoir by a Scot in Confederate ranks by William Watson makes no mention of them or trews from what I can recall, and yet there's folks who will hold him up as an example. The only Federal unit I'm aware of to have kilts were the 79th NY "Highlanders" and they wore trews early in the war in the field, and saved the kilts for dress occasions.
And ditch the "Celtic Confederate" nonsense I suspect born out of either myth or the film Braveheart because the vast majority of Southerners were and are English/Anglo-Saxon decent, and folks of Scottish decent had assimilated almost a century before the war. Heck the Charleston Mercury loved to extol the South's Anglo-Saxon heritage, yet there are a bunch of diehards who insist we're all Scottish because they love it and will hold on to the tiniest bit of evidence without the proper context. Scottish immigrants tended to get off boats up North because those were the closest, and cheapest ports to go to, and popular ones I imagine.
Heck the earliest members of my family to come to America did so before 1700 in the South and last before 1800, again in the South, and I only have a small drop of Scottish blood. All English with a smidgen of German, French, and Scottish, and somehow or other according to a certain big DNA test a smidgen of Russian.
The entire mess of folks coming to reenactments in kilts is something that needs to be nipped in the bud badly. I've also got a friend who wears trews into "battle" at reenactments and we've a lot of arguments on the matter, hence why when I hear about kilts in CW related stuff my blood boils, and my putting out this disclaimer.