How about diet and exercise? 
I wouldn't have dared to make this comment if I was 6'-0" and 185 lbs. As it is, I'm 6'-0" and just about the right weight for 7'-3" and not too worried about it. I wear Shamu size Tee shirts over a OWB Don Hume First Agent which snugly and discreetly carries a 1911 or a Hi Power or an XD. In the winter, I add an overshirt to my ensemble and a jacket if necessary.
C'mon winter!
EDIT:
Holsters cost as much as you want to pay; however, a good thick gun belt is a must.