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For a black-tie wedding, men wear a tuxedo, white dress shirt, black bow tie, polished black shoes, plus a waist covering and restrained accessories.

Black-tie optional means a tux is welcome, but a dark suit with a white shirt, dark tie, and dress shoes is correct for men.

On cruise formal night, men wear a tuxedo or dark suit with dress shoes; a blazer and trousers with a tie also fits most line rules.

Wear a tailored suit or blazer with dress pants, a collared shirt, leather shoes, and an optional tie; go lighter by day and darker at night.

For prom, wear a tuxedo for black-tie invites; pick a dark, tailored suit when the dress code is formal or semi-formal.

For a winter formal, wear a tuxedo with bow tie and polished black shoes; add a dark wool overcoat, scarf, and warm layers that remove cleanly indoors.

For a sorority semi-formal in the USA, wear a dark suit or blazer with dress pants, a collared shirt, leather dress shoes, and modest accessories.

Under a scuba dry suit, wear a wicking base, an insulating mid-layer matched to water temp, and thin socks—never cotton.

Under a v-neck sweater, wear a collared shirt or a fine tee; add a tie for dressier looks and use a v-neck undershirt to keep lines clean.

For a casual summer wedding, choose breathable fabrics, polished shapes, and light dress shoes; avoid denim, sneakers, and bridal white.