European men follow a different dress code from American men. When in Europe, avoid loud, bright colors. Instead, go with dark, muted shades.

You can no longer channel power by simply pulling on a suit and tie. We grilled eight executives—and formulated tips to help any man dress more authoritatively in today’s workplace.

Miss Manners herself once managed one carry-on bag to the Wagner festival at Bayreuth -- encompassing 10 formal evenings -- with one evening dress and a different look every night.