Don’t match your pocket square to your tie; opt for neutral hues instead. Wear dark, over-the-calf socks—no short or light-colored ones. If you arrive in gloves and a hat or overcoat, remove them during the ceremony and carry them in your hands. A single boutonniere—a gardenia or white carnation—will do nicely, and you’ll likely find inspiration in the day’s floral décor.
Accessories should be minimal: cufflinks, a watch and perhaps a lapel pin. Leave chains, piercings, extra rings and bracelets at home. Above all, present a clean, polished image—well-groomed hair and, if you wear one, a neatly trimmed beard.