Dress Codes Explained: What the Invitation Is Actually Asking

Alexandra Roberts on executive presence and social protocol

A dress code is two or three words the host has chosen to describe the evening they are hoping to have. Most guides answer it with a list of garments, and I will give you the short version of that list below, because you need it. What the lists leave out is the person who wrote the invitation.

I spent years behind the front desk at The Lowell in New York, and later at the host stand at Four Seasons San Francisco, and a surprising part of the job was reassuring guests on their way out the door. They would stop at the desk in a dark suit, holding the invitation, and ask whether “cocktail” meant they needed a tie. I could rarely tell them from the card. I could usually tell them once they said who was giving the party and where.

Start there.

The ladder, briefly

White tie is a tailcoat with white waistcoat and bow tie, and floor-length gowns. Most people will see it on an invitation once in their lives, if that, and when they do, the host will usually tell them exactly what to wear.

Black tie is a dinner jacket (a tuxedo, in American) with a black bow tie, and for women a long gown or evening wear formal enough to stand beside one. In San Francisco you meet it at the season openings at the War Memorial Opera House and at the occasional wedding whose hosts have firm views.

Black tie optional means the host will be in black tie and so will many of the guests, and a dark suit with a tie is also welcome. People read the word “optional” and arrive in a blazer. Please do not.

Cocktail is a dark suit for men. For women it is a dress that stops around the knee, or a tailored suit if you would rather. Whether you wear a tie depends on the room, which is the subject of most of this page.

Business formal is a suit and tie. Business casual is the code people argue about, and in this part of the country it has drifted so far that I treat it as a question rather than an instruction. Casual, printed on an invitation to a professional event, almost never means what you would wear on a Sunday.

Read the whole invitation before you read the code

The code is the least reliable information on the card. The venue tells you more, and the hour tells you more still. A six o’clock reception on a Tuesday at a gallery in Dogpatch, with “cocktail” printed at the bottom, wants a good jacket and probably no tie, and the founder hosting it may well be in a sweater. A Saturday dinner at eight at a private club on Nob Hill, carrying the same word, means a suit and tie and a dress you would be glad to be photographed in. Same word. Different evenings.

The paper itself is information. An engraved card that arrived by post, with a reply card inside, was sent by someone who cares about form and will notice whether you do too. A calendar invitation with a Partiful link was not.

The Bay Area translation problem

Here is where I part company with every dress code guide I have read, all of which seem to have been written for a city where words on an invitation mean one fixed thing. They do not mean one thing here. A partner on Sand Hill Road who writes “business casual” may mean an open-collared shirt and a quilted vest, which is close to a uniform in Menlo Park, while a family office in Pacific Heights writing the same two words means a jacket, and will think a little less of the guest who arrives without one, though nobody will say so on the night.

Your task is to work out which kind of host wrote the card. Their own habits are the best evidence. Someone you have only ever seen in a fleece is using “cocktail” to mean “make an effort.” Someone who wears a pocket square to lunch at the Rotunda means it literally, and probably a little more.

Dress to the host, then to your rank

My rule, which I hold to firmly: when in doubt, one step up. Underdressing at a client’s event says you decided the evening did not matter much, and the client will remember that you decided it in public. Overdressing by a step says only that you took the invitation seriously. Two steps is a costume.

There is one exception, and it applies to the people I usually work with. If you are the most senior person at a deliberately relaxed event (the engineering holiday party, say, or a founder’s barbecue in Los Altos) dress down to the room. A chief executive who turns up in a suit when everyone was told to come casual has, without meaning to, informed sixty people that they misjudged it. Senior people set the ceiling. That is a responsibility, and the same one I describe in how to make small talk at professional events, where the senior person is the one who has to carry the conversation.

And never outdress the host at their own party by more than a notch, which matters more for hosts who are junior to you than for those who are senior.

Resort casual

At Four Seasons Hualalai, resort casual meant linen, unless you were a guest who had been coming for so long that it meant whatever you liked.

When the invitation says nothing

Ask. People are oddly reluctant to, as though the question admits some failure of breeding, and so they guess, and the guess goes wrong in front of the very person they were trying not to bother. Write to the host or to their assistant, briefly: “Looking forward to Thursday. Is it jackets?” Three words of answer and you are done. A good host is relieved to be asked, because the alternative is watching a guest stand at the edge of the room all evening wishing they had worn something else.

If you cannot reach the host, ask another guest who knows them. Failing that, a dark suit, with a tie in your pocket.

If you are the host

Write a code your guests can actually follow, and add a clause when the room is unusual: “Cocktail. Jackets, no ties.” Inventions such as “creative black tie” feel charming to write and hand every guest a small puzzle to solve alone in front of the wardrobe. If you mean something specific, say it. Then dress to your own code, exactly, since guests will check you against it the moment they arrive. More on the host’s side of the evening is in client dinner etiquette, and the gala version, where black tie is most often printed and least often understood, is in fundraising gala etiquette.

Why this is a presence question

Clients sometimes treat clothing as the trivial end of an executive presence engagement, a thing to settle quickly so we can get to the board meeting. I understand the impulse. But a room reads your clothes before it hears a word you say, and what it reads is whether you understood the evening. Get it right and nobody notices, which is the point. Get it wrong and you spend the first twenty minutes of every conversation explaining yourself, at least in your own head.

Read the host. Then get dressed.