Dress code language has accumulated over centuries of social convention, and the terminology is imprecise enough that two different people can read the same instruction and arrive wearing completely different things. This glossary defines every dress code you are likely to encounter — from the most formal to the most casual — with specific guidance for men and women.
White Tie
The most formal Western dress code. Reserved for state dinners, royal events, and the grandest galas.
Men: Evening tailcoat (cutaway front, tails behind), white marcella waistcoat, white marcella bow tie, white dress shirt with stiff bib front, evening trousers with two stripes, patent leather Oxford shoes.
Women: Full ball gown or trained formal dress. Long gloves in some contexts.
Black Tie
Semi-formal evening dress. The standard for weddings, galas, charity events, film premieres, and formal celebrations.
Men: Tuxedo (single or double-breasted), matching trousers with single satin stripe, white dress shirt, black bow tie, black formal shoes.
Women: Floor-length gown or formal tailored alternative (tuxedo suit, structured jumpsuit in formal fabric).
Black Tie Optional
Black tie is preferred and will dominate the room. A very dark, well-cut suit is accepted for men. For women, cocktail length or formal attire are both appropriate.
Creative Black Tie
Black tie with permission to express personality. A tuxedo remains the baseline; variations in color (velvet dinner jacket, colored lapels), texture, and accessory are encouraged. Not a license for casual dress.
Cocktail Attire
Semi-formal, typically for daytime or early evening events. More relaxed than black tie, more dressed than business professional.
Men: A well-made suit in navy, charcoal, or seasonal color. Tie optional depending on formality of setting.
Women: Cocktail-length dress, tailored suit, or dressy separates. Knee-length to midi.
Festive Attire
A variation on cocktail that encourages personality and seasonal expression. Appropriate for holiday parties, galas with a celebratory character, and year-end events. Colors, textures, and expressive choices are welcome within a cocktail framework.
Formal Attire / Formal Business
The most elevated business dress code. Expected at senior-level interviews, C-suite meetings, formal client events.
Men: Dark suit, white shirt, tie. French cuffs and cufflinks for the most formal occasions. Polished Oxfords.
Women: Tailored suit in fine fabric. Formal shoes. Restrained accessories.
Business Professional
Standard professional dress for most corporate environments.
Men: A suit and tie. The suit doesn't have to be dark. Dress shirt, dress shoes.
Women: Tailored suit or formal dress with blazer. Closed-toe heels or formal flats.
Business Casual
The most common office dress code today in many industries.
Men: A sport coat or blazer with dress trousers. Tie not required. Sometimes allows chinos and a fitted shirt.
Women: Blouse and trousers, a sweater and dress slacks, a blazer over casual separates. Not jeans.
Smart Casual
Elevated casual. Smarter than casual, more relaxed than business casual.
Men: Well-fitting jeans or chinos, a neat shirt or sweater, clean shoes. A sport coat elevates this considerably.
Women: Clean, fitted casual pieces. A blazer or tailored layer elevates.
Casual
No dress code. Comfortable clothing appropriate to the setting. Even without a dress code, the Vestium NY principle applies: look intentional.
Garden Party
Outdoor daytime, relaxed elegance. Lighter fabrics and colors. Men: a suit or sport coat in seasonal colors and fabrics. Women: a dress, tailored separates, or a light suit.
Morning Dress
Daytime formal, primarily for very formal occasions before 6pm — Royal Ascot, formal daytime weddings, certain government and civic events. Men: morning coat (cutaway front), striped trousers, waistcoat. Women: formal daytime attire with hat.
Resort Casual
Vacation destination standard. Clean, light, elevated casual. No shorts or flip-flops in dining rooms. A linen or light cotton suit works at most resort-casual settings.
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Frequently Asked Questions
What is the difference between cocktail and semi-formal?
Semi-formal and cocktail are often used interchangeably. When distinguished: semi-formal leans slightly more dressy (toward black tie optional) and cocktail is the more relaxed version (a strong suit is sufficient for men, knee-length dress for women).
What does "smart" mean in a dress code?
"Smart" is a British term that translates roughly to "put-together" or "presentable." Smart casual means presentably casual; smart formal means a proper suit and tie. When used alone on an invitation ("smart dress required"), treat it as business professional.
Is a tie required at cocktail events?
Increasingly, no — though at more formal cocktail events and in traditional environments, a tie is expected. When in doubt, a tie carried in the jacket pocket and put on before entering gives you the option to read the room.
What should I wear when the dress code is unstated?
When the invitation gives no guidance, default to one level above your guess of the standard. For a formal wedding with no dress code: business formal at minimum. For a dinner party with no dress code: smart casual to cocktail depending on the venue. Being slightly overdressed reads as respect; being underdressed reads as carelessness.
Does Vestium NY make clothing across the full range of dress codes?
Yes. We make everything from everyday business suits to tuxedos to summer sport coats to formal coats. The common thread is that every piece is made to order in your measurements.
Work with Vestium NY. Vestium NY makes bespoke and made-to-order clothing for every occasion in New York.