I am officiating a wedding in June, and it is black tie formal. They want all the finery possible- including me, much to my protest, as I like to be understated- and I was wondering if a tartan waist coat to match my kilt would be appropriate? All the men will be in coat tails, and I will be the only kilted person there. It's odd enough that I'm at a little bit of a loss. Normally the most formal I would go is kilt and Argyle, and most of the time, not even that! Just kilt and black waist coat are my usual. So- thoughts on tartan waistcoats?