What to wear to an interview

Start by pitching the formality

Two sources of information decide your outfit: the industry and the employer in front of you. Harvard’s professional attire guide draws the line between events and interviews clearly, noting that “Business casual is the default attire for career fairs and networking events”, while an interview calls for “business formal, which can mean a suit or dress/set with a jacket”.

Harvard’s interviewing guidance gives the safe default for a first interview: “plan to wear a fairly formal outfit in a dark color”. The reason is not fashion. A formal, plain outfit is the one that nobody remembers, which leaves the interviewer’s attention on your answers.

From there, adjust towards the employer. Look at photographs on their website and their social accounts, and at what people wore in any video call you have already had with them. Then move one step up from whatever you see. If the team wears t-shirts, a collared shirt or a smart top is the step up, and a three piece suit is two steps too far.

If the invitation says something about dress, follow it exactly. If you are being interviewed for a role where you would wear a uniform or protective clothing, nobody expects you to arrive in it, and the smart version of ordinary clothes is right.

The three dress codes, and what each one means

Employers rarely explain their code, so it is worth knowing what the common labels translate into. The first two rows below follow Harvard’s interviewing guidance and its professional attire guide; the third is ordinary practice for roles where the interview involves being on your feet.

The labels blur in practice, and the third row is the one most guides ignore. If part of your interview involves walking a factory floor, a ward or a kitchen, your clothes have to survive that walk, and safety rules at the site always win over the dress code in your head.

One more judgement call. For a second or later round you can usually match what you saw people wearing in the first one, having now seen the office for yourself. That is a sensible adjustment rather than a licence to dress down.

Colours, patterns and how much personality to show

The conservative rule is to keep the main pieces dark and plain: navy, charcoal, black and grey all read as formal and photograph well on video. Harvard’s interviewing guidance recommends avoiding “wild ties, attention-grabbing jewelry, strong scents, and bold colors”, which is less about taste than about not giving the room something to look at other than you.

That is not the whole picture, though. Harvard’s professional attire guide is noticeably warmer about individuality, encouraging students to put their own stamp on a look and telling them to “Wear your favorite color, and your power heels!” Both things can be true: a dark base with one deliberate piece of colour is the compromise that works in almost every industry.

The practical version is a ratio. Keep the suit, trousers, skirt or dress neutral, and let a shirt, tie, scarf or blouse carry the colour. Creative fields tolerate much more than finance, and a portfolio role in design or media may actively expect a point of view in what you wear.

Patterns need more care than colour. Fine stripes and small checks are fine; strong geometric prints flicker on camera, and anything with a logo, slogan or image does work you have not asked it to do. The attire guide’s one firm rule in this area is that clothing should never carry offensive language or images, and the safer reading is that a job interview is not the place for any slogan at all.

Putting an outfit together: women and men

The items differ, the standard does not: formal, plain, pressed, and comfortable enough to sit in for an hour.

For women, Harvard’s guidance points to a tailored dress or a dark suit with a light shirt for corporate interviews, and to a dress, skirt or dress trousers with a collared shirt or a polished sweater for business casual settings. A jacket or structured cardigan raises the formality of any of those by one notch and solves the cold meeting room problem. Hems and necklines want to be the ones you forget about once you sit down, and heels want to be the ones you can walk to reception in.

For men, the corporate default is a dark suit, a light long sleeved shirt and a plain tie, with polished leather shoes and a matching belt. For business casual, drop the tie and swap the suit for dress trousers or khakis with a button down shirt, and add a jacket if you want to look more formal without wearing a suit. Make sure the collar fits and the sleeves end at the wrist; a shirt a size too large is the single most common fit problem interviewers notice.

If you do not own anything formal, borrow rather than buy badly. One well fitting outfit you have worn before beats three new items you are still adjusting, and nobody has ever been turned down for wearing the same suit to two interviews.

Shoes, grooming and the details people miss

Footwear is where candidates most often undercut the rest of the outfit. Harvard’s attire guide says plainly: “Avoid sneakers and informal sandals like flip flops.” Closed, clean, low or flat shoes work almost everywhere, and the test is whether you could walk fifteen minutes in them without thinking about it.

Grooming is simple and specific. The same guide’s instruction is “comb your hair, iron shirts and blouses”, which covers most of what gets noticed: creases, collars, hems, lint, scuffed shoes and nails. Do the ironing the night before rather than in the twenty minutes you have reserved for calm.

Scent should be close to absent. Interview rooms are small, panels are often three people deep, and some workplaces, especially in healthcare, operate fragrance restrictions. The same applies to anything that makes noise: stacked bracelets and keys in a pocket are distracting on a video call and in a quiet room.

Finally, wear the whole thing once before the day. Sit in it, reach forward, cross your legs, carry a bag. Clothes that only work while standing still are discovered at the worst possible moment.

Video interviews, informal chats and non office settings

On a video call the formality rule is unchanged, and the framing is what changes. Dress fully, not just from the waist up, because standing up to fetch a document happens more often than you would think. Choose a mid tone or dark solid top, since bright white can blow out in a bright room and fine patterns shimmer on compression. Avoid anything close in colour to the wall behind you so you do not merge into it. The video interview guide covers the rest of the setup.

An informal chat over coffee is still an interview. Dress business casual rather than weekend casual, and remember that the person you are meeting may walk you back into the office afterwards to meet someone else.

For site based roles, ask what the visit involves. If any part of the day is on a floor, a ward, a building site or in a vehicle, you want flat closed shoes, trousers and layers you can take off. If the employer requires protective equipment, they will provide it, and arriving in clothes that can accept it is the point.

Weather and travel deserve the last word. Carry the coat and the umbrella instead of wearing the outcome of a wet walk, and allow time at reception to settle before anyone sees you. The rest of the day is covered in what to bring to an interview and how to prepare for a job interview.