Formal dress code, often termed "black-tie optional" requires a polished, sophisticated look for evening events like weddings or galas. Men should wear a dark suit (navy, charcoal, black) with a tie or a tuxedo, while women should opt for a floor-length gown, fancy cocktail dress, or elegant separates.

Key Guidelines for Formal Wear:

Men: A tailored suit or tuxedo, crisp dress shirt, and silk tie or bow tie. Complete the look with leather dress shoes (oxfords or derby) and a pocket square.

Women: A formal floor-length gown is safest, but a high-end midi or cocktail dress is also acceptable. Pair with heels or elegant dressy flats and a clutch.

Colors & Fabrics: Stick to classic, muted, or deep tones (black, navy, burgundy, charcoal). Choose luxurious fabrics like silk, cashmere, or high-quality wool.

Difference from Black-Tie: Formal is slightly less restrictive than strict "black tie" allowing for a dark suit instead of strictly a tuxedo, but it is more elevated than "cocktail" attire.