I recently recieved a MTM shirt from Hong Kong--and am overall fairly happy with it. But the armholes, while fitting snuggly up in my armpits (very comfotably), are showing my perspiration (I don't wear an undershirt). So what are my options here? - either wear an undershirt or lower the armoles? But if I lower the armholes, won't itl change the overall look/feel of the shirt?