Men's Black Microfiber Laydown Collar Shirt
This non-pleated microfiber shirt wears well under a suit or as a bold choice with a tuxedo. It's pictured here with optional black studs that insert through cutouts just above the regular, black buttons. Standard cut versions will fit any body type, although if you're a little slimmer in the body you'll probably like a fitted size better.
The guy writing this (me) once wore a black shirt under a tuxedo to a wedding and feels that it earned him way more hugs from grandmothers, and far fewer frowns from bridesmaids. So, if you're looking for similar success, he says to try a black shirt with your formal attire on occasion.
May also be available in a Friar Tux Shop location.