What to wear to Model UN depends on which part of the conference you are dressing for: smart casual for arrival and travel, Western business attire for every committee session, and black tie if the conference closes with a formal gala. Get those three registers right and everything else is detail.
Key takeaways
- Most conferences run on three dress registers: smart casual on arrival, business attire in committee, and black tie or formal wear for a gala.
- Western business attire means a suit or an equivalent tailored outfit in a dark, plain colour, with closed shoes and no logos.
- Fit and comfort matter more than price; you will sit, stand and speak in the same outfit for eight hours.
- National dress is generally welcome in committee wherever a conference permits it, and is treated as the equal of a suit.
- For a three-night conference, two committee outfits, one formal outfit and one travel outfit are enough.
- The Global 60 runs exactly this pattern: smart casual on Thursday, business attire Friday to Sunday, black tie on Saturday night.
What is the Model UN dress code?
The Model UN dress code for committee is Western business attire, the same standard a diplomat would wear to a working session at the United Nations. Model United Nations (Model UN, MUN) is a simulation in which students represent countries, so the dress code exists to put every delegate on an equal, professional footing before a word is spoken.
Most conferences publish their code as a single line and expect you to know what it means. In practice it breaks into three registers, and the confusion usually comes from applying one register where another belongs: a blazer at a black-tie dinner, or trainers under a suit in committee.
If this is your first conference, our guide to your first Model UN conference covers what happens in the room; this article covers only what to put on before you walk into it.
The three registers at a glance
Almost every residential conference asks for three levels of dress: smart casual when you arrive, business attire during sessions, and black tie or formal wear for a closing dinner. The table below lists items for all genders; choose whichever column suits you.
| Register | When | Tailored option | Dress or skirt option | Shoes and finishing |
|---|---|---|---|---|
| Smart casual | Arrival, travel, informal receptions | Chinos or dark trousers, collared shirt or fine knit, optional unstructured blazer | Simple day dress or skirt with a knit, or trousers with a blouse | Clean loafers, leather trainers or flats; no sandals or sportswear |
| Business attire | Every committee session, opening and closing plenaries | Dark suit, plain shirt, tie for those who wear one, leather belt | Suit with skirt or trousers, tailored dress with a jacket, or blouse with a blazer | Closed leather shoes or low heels; a plain watch; minimal jewellery |
| Black tie | Gala or formal closing dinner | Dinner jacket (tuxedo) with bow tie, or a dark suit with a plain dark tie where the invitation allows | Floor-length or midi evening dress, or a formal evening suit | Polished black shoes or dressy heels; a clutch or slim wallet; no backpacks |
A conference will tell you which registers apply. A one-day school conference may ask only for business attire; a residential conference with a gala asks for all three.
What is Western business attire for committee?
Western business attire means a suit or an equivalent tailored outfit in a dark, plain colour, worn with closed shoes, and free of logos, slogans and anything that reads as casual. It is the working uniform of committee, worn from the first roll call to the final vote.
The suit
Navy or charcoal is the safe choice; black reads as evening wear or mourning in some cultures and is best kept for the gala. A single suit worn with different shirts across several days is entirely normal at any conference, and a well-fitted inexpensive suit looks better than a costly one that does not fit.
Shirts, blouses and ties
Plain white or pale blue shirts and blouses photograph well and pair with anything. Ties are optional at most conferences but common; keep patterns small and colours quiet. Avoid anything sheer or sleeveless under a jacket, since you will take the jacket off during long caucuses.
Shoes
You will stand for speeches, walk between blocs and queue for lunch, so choose shoes you have already worn. Leather shoes, brogues, loafers or low block heels are all appropriate; trainers, however smart, are not.
Business attire for students on a budget
One dark suit, three shirts or blouses, one pair of shoes and one belt will carry you through a whole season of conferences. Charity shops and end-of-season sales are where most seasoned delegates found theirs.
Smart casual for arrival and travel
Smart casual means clothes you could travel in for several hours and still be introduced in without embarrassment: dark trousers or chinos, a collared shirt, a fine knit or a simple day dress, with clean leather shoes or plain trainers. It is the register for registration desks, hotel check-in and informal receptions on the first evening.
Arrival day is also portrait day at many conferences, so wear something plain and dark on top even if the rest of the outfit is relaxed. At The Global 60, Thursday is smart casual, the evening welcome reception is described as elevated evening casual, and the professional portraits are taken that afternoon, so a plain shirt or knit is worth choosing deliberately.
Black tie for students at the gala
Black tie for students means a dinner jacket with a bow tie, or an evening dress or formal evening suit, and it is the one register where a business suit is a step too casual. If a conference closes with a black-tie gala, it will say so on the programme, usually months in advance, precisely so that delegates have time to borrow, hire or buy.
What black tie actually requires
- Dinner jacket: black or midnight blue, with a white dress shirt, black bow tie and black polished shoes. A hired dinner suit is completely acceptable and far more common than an owned one.
- Evening dress: floor-length is traditional; a formal midi dress or an evening trouser suit is equally correct at almost every student gala.
- Where the invitation allows: some conferences accept a dark suit with a plain dark tie as an alternative to a dinner jacket. Check the wording rather than assuming.
The Global 60 Gala on the Saturday night is black tie, with a cohort portrait and professional photography, and the schedule builds in an afternoon reset before it so that nobody is changing at the last minute. Everything from bow ties to the order of the evening is covered in our companion piece on Model UN gala and black-tie etiquette.
Is national dress allowed at Model UN?
National dress is generally welcome in committee and at formal dinners wherever a conference permits it, and most do. Formal national dress, whether a sherwani, a kimono, a kente cloth, an abaya, a kilt or a barong, is treated as the equal of a Western suit at the United Nations itself, and a good conference follows that lead.
Two courtesies apply. Wear your own national or cultural dress rather than the dress of the country you are representing, since costume play is discouraged everywhere. And check the conference's published code first, as a small number of school-level conferences ask for Western business attire only. Where a conference is silent, a short email to the secretariat settles it.
What to avoid
The mistakes that stand out in committee are almost always about register, fit or distraction rather than cost.
- Trainers, sandals or open-toed shoes with business attire, however clean.
- Logos, slogans and school sports kit, which read as casual and, in committee, as advertising.
- Costume elements: flags, sashes, national colours of your assigned country or props of any kind.
- Anything untested: new shoes, a suit collected the night before, or a dress you have never sat down in.
- Heavy fragrance in a closed room of twenty people for three hours.
- Visible headphones, smartwatches that buzz, or a phone in a shirt pocket while you are speaking.
- Over-dressing the daytime: a dinner jacket or evening gown in committee is as out of register as trainers at the gala.
Packing for a three-night conference
For a three-night conference you need one travel outfit, two committee outfits that share shoes and a jacket, and one formal outfit, plus the small items that stop a good outfit going wrong. That is a carry-on and a suit carrier, not a large case.
A packing list
- Committee: one dark suit or two tailored outfits, three shirts or blouses, one or two ties or scarves, one belt, one pair of leather shoes, enough socks or tights for every day plus one spare.
- Gala: dinner jacket or evening dress, dress shirt, bow tie, black shoes, and any jewellery or cufflinks in a small pouch.
- Travel and evenings: the smart-casual outfit you flew in, a fine knit for over-air-conditioned rooms, and something to sleep in.
- Small items: a lint roller, a travel steamer or a plan to hang suits in a steamy bathroom, a sewing kit, plasters for heels, a stain pen, and a folder that fits in your bag for placards and notes.
- Documents: passport or identity card, printed position paper, and the conference dress guidance itself.
New York in April is mild but unpredictable, so add a light coat that works over a suit and an umbrella. At The Global 60, Thursday 22 – Sunday 25 April 2027, the published programme lists the dress for every session, so you can pack against it line by line. For the rest of the trip, from airports to hotel rooms, see our guide to student travel to a New York conference.
Where to go next
The programme page lists the dress register for every session of The Global 60, and the gala page describes the Saturday evening in detail. For what you will actually be doing in those clothes, the free public speaking for delegates module and the wider training curriculum are the place to start; and if you are ready, you can apply to The Global 60 in about ten minutes.
Frequently asked questions.
What is the dress code for Model UN?
Western business attire in committee: a dark suit or equivalent tailored outfit with closed shoes. Residential conferences usually add smart casual for arrival and black tie or formal wear for a closing gala.
What does Western business attire mean for students?
A navy or charcoal suit, or a tailored dress or skirt with a jacket, worn with a plain shirt or blouse and leather shoes. No logos, trainers or costume elements.
Do I need a tuxedo for a Model UN gala?
If the gala is black tie, yes: a dinner jacket with a bow tie, or an evening dress or formal evening suit. Hired dinner suits are entirely acceptable, and some conferences allow a dark suit with a dark tie; check the wording.
Can I wear national dress to Model UN?
Generally yes, wherever the conference permits it, and most do. Wear your own national or cultural dress, not that of the country you represent, and check the published code first.
What is the dress code at The Global 60?
Smart casual on the Thursday arrival, business attire for committee sessions on Friday, Saturday and Sunday, and black tie for the Global 60 Gala on Saturday night. The programme page lists the dress for every session.
How many outfits do I need for a three-night conference?
One travel outfit, two committee outfits that share a jacket and shoes, and one formal outfit. That fits in a carry-on and a suit carrier.
Youth Impacts is a Model United Nations organisation. Its flagship New York experience is The Global 60: sixty delegates, three small chambers, 22 – 25 April 2027, admission by application and interview. Youth Impacts Model United Nations (YIMUN) has run since 2025. Questions: info@youthimpacts.com. Published 19 September 2026.