well i hae a 46 waist, and ma kilt was made when i had a 48/50 .. lost some weight i guess, but it still fits fine with the belt, but add ma sporran and i get some slip.. i do like the looks of the braces, and why not indeed was my first thought, lol ... is there any historical evidence for braces with the kilt ..
anyway, it would be a matter of sewing on the proper buttons, no ?
cheers