Just to bring it over into this thread, I found a fairly good quality tuxedo jacket in a Good Will store for almost nothing. I had it drycleaned and it is in new condition.

I don't have the pants for it, and it also has notched lapels, so it would probably be best to convert it to a formal kilt jacket with an Argyle cut. I think the notched lapells would be best with that style.

The materiel is 100% worstedn berlington woll and the lapels are a nice quality satin, kind of a silk feeling satin.

Sidnie7 had just done a tux to BB jacket conversion, so I was using that as reference; though the tux she converted is different in a few ways from mine.

I have also been experimenting on sport jacket conversions with a pleated, non-open-vent treatment for the back of the kilt jackets that also takes in the waist a bit.