The wearing of Victorian/modern kilts and Utilikilts at Ren Faires doesn't look right to me. But then again most of the people walking around are in blue jeans so whatever. I guess the point is, just wear your ordinary daily clothing (be it blue jeans or Utilikilt) unless you're going to participate in the theme of the event and dress the part well.

I'm a piper and I wear Highland Dress all the time when I work. But when I attend Ren Faire it's either in ordinary clothes, or in full English Renaissance costume (when I'm playing my Cornish Doublepipes).

Anyhow appropriate period Highland Dress is easy to do, and very comfortable. Get a leine (thin cloth is best if it's going to be hot) and get some non-clan-tartan plaid wool and and stout belt and wear the Breacan-an-Fheilidh. A leather poke bag will serve for a sporran (sporrans in the modern shape didn't exist then). There's a place at our local Ren Faire which makes very nice early-style ghillies, sort of halfway between a 19th century ghillie and the original Gaelic pampooties. Period-style knit bonnets are also widely available- don't wear Victorian headgear such as modern Glengarries and Balmorals.

Around 30 years ago I wore all that stuff to Ren Faire. I had found some wonderful plaid wool at a local fabric shop and I sewed a fringe of fur all around the edge. (Early depictions of Highland Dress show the Breacan-an-Fheilidh often bound around the edge with contrasting binding, and sometimes fur, demostrating its origin with the Brat.)

I could wear this "plade" either as a Breacan-an-Fheilidh or as a Brat. Likewise the leine could either be worn long (with the brat) or at the knee (with the breacan-an-fheilidh).

I also made a pair of diced hose, sewn up from plaid wool cloth, based on the hose pattern in Sketchbook 76.