Here’s a lickety split diy that your guy will lurv!
Steal a boring t-shirt from your dude
snag a chopped leg from your fabulous perfectly frayed cut offs
slice out a simple shape long enough to cover the t-shirt side seam from under arm to hem
stitch it on (add another to the shoulder as well for some extra oomph!)
groovy!
…but the tag printed on the back was bothering me
so I chopped out another piece of denim large enough to cover the printed label & pinned over top of it right side facing down
stitched it on
& sliced out the offending label
much better!