The 5 biggest mistakes guys make with their dress shoes

A modern gentleman has, in the back of his head, at least a base knowledge of what color shoes go with what color suit. And he uses this to his advantage when he buys and wears suits and shoes.

For reference, here's a fantastic graphic that breaks it down.

For the record, brown and light gray can go together, though it is definitely on the fashion-forward side.

A modern gentleman knows exactly how a shoe should fit. He also knows that most men aren't wearing the correct shoe size, and, to avoid that, he has his fit by a professional.

Slip-on shoes that aren't loafers are a big no-no for any kind of formal event — especially with a suit.

A modern gentleman avoids anything that looks like it might belong at a middle-school formal, and these kinds of shoes are certainly included.

Square-toed shoes aren't about style. They're about the silhouette of your foot, which inherently looks ugly with square-toed shoes on.

A modern gentleman knows that the square-toed shoe silhouette is unflattering, and he avoids it at all costs. After all, it is one of the 11 deadly sins of men's style.