Blacktie
Black tie is a formal evening dress code. Men wear a dinner jacket with matching trousers, a white evening shirt and a black bow tie. A full-length evening gown is the clearest choice for women. Check the invitation before choosing a shorter dress or evening separates, because hosts interpret these alternatives differently.
For her
Wear
- A full-length evening gown
- Formal evening shoes and a small bag
- A wrap or coat that works with the gown
Skip
- A casual maxi dress chosen only for its length
- Daytime linen separates and beach footwear
For him
Wear
- A black or midnight-blue dinner suit
- A white evening shirt and black bow tie
- Polished black evening shoes
Skip
- A business suit when black tie is expressly required
- A regular necktie in place of the black bow tie
Read the wording
Black tie optional gives men a dark-suit alternative. A plain black tie invitation has a more specific expectation. Ask the host if hiring a dinner suit is difficult.
The fabric matters
Length alone does not make a dress formal. Consider its construction, lining and finish. A casual jersey maxi will read differently from an evening gown.
The Khirzad edit
Khirzad is a Foundlab client. Foundlab runs Dress Codes.
Prices and availability checked against Khirzad’s catalogue on 28 October 2026. Check your size and delivery timing at Khirzad.
Evening gowns. Check the host’s guidance on coverage, trains and colours.
Good to know
What is a dress code for a black tie event?
The standard is a dinner suit and black bow tie for men, and a formal evening gown for women. A venue or host may add more specific instructions.
What is a black tie dress code for ladies?
A full-length evening gown is the safest starting point. If you prefer a dressy midi or trousers, check that the host accepts that interpretation.
What colours should you not wear to a black tie event?
Black tie does not require every outfit to be black. At a wedding, avoid an all-white or bridal-looking outfit unless the couple requests it. Follow any stated palette.
Can I wear any colour dress to a black tie event?
Most evening colours can work. The fabric and formality still matter. For a wedding, check the couple’s colour instructions before choosing white, ivory or a very pale gown.
Sources and context
Checked on 26 October 2026. These sources inform the guide. Clothing suggestions also reflect the setting described above; your host’s instructions take priority.
- Debrett’s: Events and dress codes
Traditional evening codes, lounge suits and the distinction between formal and informal smart casual. British etiquette context; Australian venue instructions take priority.
- Bec + Bridge: Wedding guest dress guide
Designer guidance on interpreting the invitation and choosing cocktail or evening gowns.