A half an inch to your elders is half an inch. I would hem it. What I do, is cut exactly right above the existing hem all the way around. It is probably a 1/4" hem? Then I would use a chalk line and measure and mark 1/4" above the cut line. Take the edge and fold up to touch the chalk line. Press this down. This is where a Clover mini iron comes in handy. Then, go around and fold up the edge again. Press. Sew the hem. You have just hemmed up 1/2". May not be professional, but it works for me. I have changed many hemlines on men's shirts. Mainly because when my DH gives my sons newer used dress shirts, they are too long as DH is 6'2" and my sons are 5'10" and 5'11". At the curves near the side seams, you may have to snip one or two 1/8" snips on the fabric edge to be able to ease the curve and fold over for the hem. I have not had any issues doing this, and it does work.