From Muscular to “Big Boned,” we have a FIT for you
T-shirt sizes are Bulls%^t
A typical t-shirt "Size" is comprised of both a
(or shape) of the garment & a
(ex: Small, Medium, etc). So a typical "Size" hides an implicit decision about the cut/shape of the garment (like a high sleeve, tight arm, or narrow waist, for example). And, there's no 1 "Cut" that works for every body type.
"Cut + Grade = FIT"
and there's no one "Cut" that everyone prefers.