For a traditional shirt, they say the silhouette makes it or breaks it.
But for a plaid shirt
like a work shirt, this is something that is not said much
following the norm of being slightly larger
WTAPS work shirts, like a traditional shirt
are made focusing on the silhouette.
The collar is said to be the face of the shirt making the overall look.
To add on, the “collar” is something important
since a persons impression can change with just the “collar”.