For casual wear in the U.S. there is nothing more classic than high-quality Western-wear, made in the U.S. to standards of design that have endured for decades.
Especially in the Southwestern states, this kind of shirt dressed up with a silver bolo tie and a nice sport coat can take you almost anywhere. Go with a plain color or a subtle pattern and you CAN go anywhere. But, be careful about wearing jeans, and super careful about the quality and condition of your boots and hat . . . . . . . . .
MORGANA MARTIN, THE MAGICVINTAGESPY