Dress Codes Explained: From Casual to White Tie
Decode the most common dress codes, including smart casual, business casual, cocktail, black tie and white tie, with clear examples of what to wear.

Key takeaways
- Dress codes run from casual to white tie, with each step adding formality.
- When unsure, it is safer to dress slightly up than slightly down.
- If an invitation is unclear, ask the host what most guests will wear.
Dress codes are shorthand that tell guests what level of formality to expect. They vary by culture, region and industry, but the main categories are widely understood. Use this guide as a baseline and adjust for the occasion.
Dress codes at a glance
| Dress code | Typical outfit for men | Typical outfit for women |
|---|---|---|
| Casual | Jeans or chinos, t-shirt or polo, clean trainers | Jeans or casual dress, simple top, comfortable shoes |
| Smart casual | Chinos, collared shirt or fine knit, optional blazer | Tailored trousers or skirt, blouse, neat flats or boots |
| Business casual | Trousers, button-up shirt, optional jacket, no tie | Trousers or skirt, blouse or knit, smart shoes |
| Business professional | Matching suit, dress shirt, tie, leather shoes | Suit or tailored dress, closed shoes |
| Cocktail | Dark suit, dress shirt, tie, polished shoes | Knee-length or midi dress, or a dressy separates outfit |
| Black tie optional | Tuxedo preferred, or a dark suit with a tie | Floor-length gown or an elegant formal dress |
| Black tie | Tuxedo, formal white shirt, black bow tie, black shoes | Floor-length evening gown or formal equivalent |
| White tie | Black tailcoat, white waistcoat and bow tie, formal shirt | Full-length ball gown, often with gloves |
Casual and smart casual
Casual means comfortable, clean and neat. Smart casual raises the standard slightly: think tailored trousers or chinos instead of jeans, a collared shirt or a fine knit instead of a t-shirt, and leather shoes or clean minimal trainers. Smart casual is the dress code most often used by restaurants and relaxed events.
Business casual and business professional
Business casual usually means no tie and no full suit, but still a collared shirt or blouse and smart trousers. Business professional is the most traditional office standard: a matching suit, dress shirt, tie for men, and closed, polished shoes. Because workplaces differ, look at what senior colleagues wear.
Cocktail attire
Cocktail dress is dressier than business wear but not as formal as black tie. It is common for evening weddings and celebrations. Darker colours, quality fabrics and polished accessories suit the occasion.
Black tie and white tie
Black tie is evening formalwear. For men, this means a dinner jacket, often called a tuxedo in North America, with matching trousers, a formal white shirt, a black bow tie and black shoes. White tie is the most formal dress code and is rare outside state occasions and some traditional balls. It requires a black tailcoat, a white waistcoat and a white bow tie.
Tips for choosing
- Check the time of day. Evening events are generally more formal than daytime ones.
- Consider the venue and climate as well as the code itself.
- Choose comfort and fit first, because a well-fitted outfit looks right at any level of formality.


