New Thom Browne White Cotton Oxford Cloth with Grosgrain Placket Button Down Collar Shirt.  Mother of Pearl Buttons, Locker Loop.  Size TB1.  Measures 14.5-31, measures 19.5 inches across chest.  MSRP $425.

Genuine, 100% Satisfaction Guaranteed.  It's that simple.
If you aren't happy then I'm not happy.
If you don't like it, it doesn't fit, you changed your mind, or for any reason at all...just return it for a refund of the purchase price.