Quote Originally Posted by M. A. C. Newsome
Since that doesn't show in your pictures, I can't tell you how easy that might be. If the leather strap is sewn in a few inches back from the apron edge, it's an easy job of moving it.

If it's already right on the edge of the apron -- well then you are talking about altering the kilt.

Aye,
Matt
The other option is replace the under apron strap with a longer one. Moving the right side buckles and adding a longer strap on the left might do the job.