Shirt

It is best to have a 100% cotton dress shirt to wear with your suit (like wool, cotton breathes). Plain white, point collar shirts are okay with all styles of suits and on all occasions. There are numerous variations in shirt collars-- you should choose a collar that is both classic and flattering to your face. For example, if you have a narrow face, you might want to consider a spread collar; if you have a round face, consider a straight point collar. As a rule, never wear a button-down collar shirt with a double-breasted suit.

Your shirt should be smooth around the neck and allow for an index finger of breathing room in the collar. You should never feel choked by your collar. Most men who feel choked when wearing a suit and tie often are wearing shirts with an ill-fitting collar. Have a salesperson measure you to fit your shirt and collar properly.

Belt, shoes, and socks

Your belt should be the same color as your shoes, and both belt and shoes should preferably be made of leather. Black is usually a safe choice for both shoes and belt. Wingtips or other traditional lace-up shoes are recommended. Socks should be dress socks and should match your pants. The metal of your belt buckle should match the metal of your watch, if you wear one.