Hi, not sure which forum this belongs in...I'm looking for ideas on how to alter button down dress shirts for work. My problem is that in the chest shoulders I'm one size, and in the dreaded quad gut area, I'm several sizes different. I'm 6'4, 189 lbs, but have found myself needing to buy XXL shirts, which still end up being tight in the midsection. I buy anything bigger and I'm swimming in the chest/shoulders. I've thought about having the shirt tailored with a slice up the back (hidden by the backrest), and adding material to the lower portion. I'm just not sure how that'd work. Anyone else done something similar?

Something like this: https://www.youtube.com/watch?v=Yrl4aeqluwE