Ditch the tuxedo and opt for a pure linen suit in navy blue—and then proceed to get blissfully sloshed off the gratis bubbly while the rest of the guests shvitz through their super 110s.

Linen isn’t just for casual weddings. A well-tailored linen suit in darker shades—such as navy or charcoal—can look just as sharp in an urban setting. When paired with a formal tie and polished shoes, ...