A dark suit for black-tie optional
A dark matching suit and restrained tie make the suit route for a black-tie-optional invitation. Flat evening shoes sharpen the finish; optional does not mean casual separates.
The whole combination
- White formal long-sleeved shirt
- Charcoal matching suit trousers
- Charcoal matching suit jacket
- Burgundy necktie
- Black flat patent evening shoes
- Black evening socks
- Small black evening bag
Check it on you
Check the invitation actually says optional and confirm local conventions. Try the suit seated and walking, with the collar and shoe combination you plan to use.
Make it work with what you own
Use or borrow a well-fitting dark suit. If the code is black tie without optional, choose the dinner-tailoring set instead.
Before you leave: test reaching, sitting and walking. Follow your own garment care labels. Weather suitability depends on the actual clothes and conditions; this look has no warmth or waterproof rating.
Western dress-code definitions: Emily Post. Confirm the invitation, host and cultural expectations.