But there are so many styles to choose from, from short- and long-sleeved to smart and causal (smart-casual, anyone?!), not ...

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Button-down Best for: Wearing solo or with a tie, business casual Last but certainly not least, Brooks Brothers' American Made Heritage OCBD Dress Shirt has been adorning American men since 1900.

Generally, business casual for men includes chinos or slacks, a button-down shirt, a belt, dress socks and dress shoes. A colored button-down shirt is more casual than a white button-down shirt.