[The First Aria]

I can share in the headlight action... Long before NBE... - Although i always wear compression shirts and usually thick, oversized T-Shirt, or Dress shirt with center relief(nearly female cut). - Avoid polo's, there a dead give away... -____- 

I'm fine with men's dress shirts, I've tried to use women's, but a vast majority have princess seams which are a dead giveaway as well. I've found women's polos to work fine so long as the placket (button area) isn't excessively long. Hardly anyone notices that the placket is reversed from a men's polo.

For underneath I use women's sport tanks with compression/shelf bra built in and that's been working for years now.

Yes, I agree about the Polo's.  Usually, they are short one button or the buttons maybe closer together.  But, I have never seen anyone run around with a ruler or count buttons.  LOL.