London stopped requiring it and never stopped rewarding it. Notes on what the phrase still means.
No restaurant in London will turn you away for a good plain shirt. That is precisely why dressing for dinner has become interesting again: it is voluntary, so it reads as intention. Two people who have visibly considered the evening change the temperature of a table before a word is spoken — the room notices, the service notices, and so does the person opposite.

Every dining room broadcasts its register: linen or bare wood, candlelight or spots, the age of the crowd, the height of the flowers. Book anywhere worth going and the photographs tell you the code in thirty seconds. The aim is one step above the room’s centre — never two, which turns dinner into costume.
London dines in the dark half of the wheel: ink, charcoal, deep green, black. Candlelight loves texture more than colour — velvet, silk, good wool — and a single point of light at the collar or wrist does more than a printed everything. The test for any outfit is three hours seated: whatever cannot survive a chair was never elegant to begin with.
The whole art is effort that does not announce itself. Pressed, polished, considered — and then worn as though none of it took a minute. Fuss is the one true dress-code violation. The best-dressed person at dinner is always the most relaxed one, because the decisions were finished at the wardrobe.
Because dinner is the theatre two people put on for each other, and wardrobe is the half of the production you control before a word is spoken. Dressing well for a table is a compliment paid in advance — to the room, to the evening, and mostly to whoever sits across from you.
I dress for the room. Occasionally — for the company. Give me a reason.
Also: The opera, dressed for · The plus one · The Journal · Join Me.