I fluctuate between 175 and 190lbs but usually somewhere in the 185 range. My sportcoats have been fine BUT I did have them tailored when I was in the middle of my weight range.
If you do get muscular you will have to get clothes tailored. The big problem is that clothing isn't really made for people with a big drop (wide shoulders and narrow waist).
If you do get muscular you will have to get clothes tailored. The big problem is that clothing isn't really made for people with a big drop (wide shoulders and narrow waist).