Packing

Knowing what to wear on a cruise is simpler than it looks: casual clothes by day, swimwear only around the pool, and smart-casual outfits for most evenings. Many lines also hold one or two dressier nights a week, from cocktail-dress optional on Carnival or Royal Caribbean to proper black tie on Cunard and P&O Cruises. The rest of this guide covers each situation, gives the current dress code for each major line and ends with a 7-night packing list.

What to wear on a cruise: the quick rules

Almost every cruise line uses some version of the same pattern. Once you know it, packing gets much easier.

• Daytime on board: relaxed holiday clothes such as shorts, T-shirts, sundresses, linen and trainers or sandals.
• Pool and sun decks: swimwear is fine here, but bring a cover-up for walking through the ship and for the buffet.
• Most evenings: smart casual. That means trousers or chinos with a collared shirt, or a dress, skirt or smart trousers with a nice top.
• Dressy or formal nights: anything from a cocktail dress and a shirt with a jacket to a ball gown and a dinner jacket, depending on the line.
• Everywhere indoors: wear shoes and a shirt. Wet swimwear, bare feet and bathrobes are not allowed in restaurants on any mainstream line.

Dress codes usually start around 6pm. If you would rather not dress up on a given night, the buffet and some casual venues stay relaxed, so you are never stuck.

Cruise dress codes by line

Every line has its own names for its evening codes, and some have changed recently. The table shows the position in late 2026. Always check your cruise planner or app before you pack, because lines adjust these rules from time to time.

On P&O and Cunard, more guests dress up fully than on the US-focused lines, and black tie nights are taken seriously, especially on longer voyages. For a closer look at how formal each brand feels on board, see our ranking of the poshest and least posh cruise lines.

Daytime, pool and excursion outfits

Around the ship

Daytime on board is relaxed on every line. Pack breathable shorts, light trousers, T-shirts, polo shirts and sundresses or casual dresses. Bring comfortable flat shoes too, because large ships involve a lot of walking and some stairs. A light cardigan or overshirt is useful because restaurants, theatres and lounges can feel cold with the air conditioning on.

At the pool

Two swimsuits are enough for most people, so one can dry while you wear the other. Add a cover-up or kaftan, sandals that can get wet, sunglasses and a sun hat. Most lines supply pool towels, so you don’t need to bring beach towels. The usual rule is to wear a cover-up and footwear when you leave the pool deck, including at the buffet.

On shore excursions

Dress for the port and the activity, not the ship. City tours call for supportive shoes and breathable layers. Beach days call for swimwear under your clothes and water shoes on rocky coves. Many churches and religious sites, including those in Rome, Venice, Istanbul and parts of Greece, expect covered shoulders and knees, so keep a lightweight scarf or sarong in your day bag. A compact backpack or crossbody bag is safer than a tote in busy ports. Our guide to the best carry-on bags for a cruise includes options that work for both embarkation day and excursions.

Evening wear: casual, smart casual, formal and theme nights

Smart casual (most nights)

For men, this usually means chinos or smart trousers with a collared shirt or a smart polo, plus loafers or clean trainers where allowed. Women can wear a maxi or midi dress, a jumpsuit, smart trousers with a blouse, or a skirt and top. Dark jeans without rips are fine on most US-based lines, but not on Cunard or P&O in the evening.

Cruise formal nights

What counts as a cruise formal night depends heavily on the line. On Royal Caribbean, Princess, MSC and Carnival, a suit or a jacket with smart trousers is fine for men, and a cocktail dress or dressy separates works for women. Some guests go further with tuxedos and gowns, but this is optional. On Cunard and P&O, many men wear a dinner jacket and bow tie and many women wear long gowns. A dark suit and tie is the accepted minimum for men.

You can skip formal night entirely. You can eat at the buffet or a casual venue instead, but you should not turn up in the main dining room in shorts.

Theme nights

Theme nights are fun extras, not requirements. Common ones include white nights (Carnival’s White Hot Night, MSC’s White Party and similar parties on other lines), Virgin Voyages’ red-themed Scarlet Night, and 70s, 80s or tropical parties. On P&O’s UK sailings, deck parties with a British flavour are often part of the programme. One white outfit and one bright or patterned outfit cover most of them.

What to wear on a cruise by destination

Caribbean, Bahamas and Mexico

Expect heat and humidity all year. Pack linen, cotton and moisture-wicking fabrics, plenty of swimwear, reef-safe sun protection and one light layer for cold indoor spaces. Evenings stay warm, so lightweight dresses and short-sleeved shirts work well even at dinner.

Mediterranean

Summers are hot, while spring and autumn can be cool in the evenings. Comfortable walking sandals or trainers are essential for cobbled old towns, and the shoulders-and-knees rule for churches applies across Italy, Croatia, Greece and Turkey. Bring a light jacket for sail-aways after dark.

Norway, Alaska and northern Europe

Layering matters most here. Pack a waterproof jacket with a hood, a fleece or warm mid-layer, thermal base layers for glacier days or winter sailings, waterproof walking shoes, gloves and a hat. Even in July, the deck can feel cold during scenic cruising in the fjords. Evenings on board stay smart casual as usual. If you are sailing from Southampton, our guide to a Norwegian fjords cruise from the UK covers the route and the best time to go.

Sample 7-night cruise capsule packing list

A capsule wardrobe uses a small set of pieces that all mix and match. Choose two or three base colours, such as navy, white and one accent colour. This list assumes a warm-weather week with two dressy nights. Adjust it for colder routes using the destination advice above.

1. Daytime tops (5-6): T-shirts, polos or vests, plus one long-sleeved layer for sun protection.
2. Daytime bottoms (3): two pairs of shorts or skirts and one pair of light trousers.
3. Swimwear (2) and one cover-up.
4. Smart casual evening outfits (3-4): two shirts or tops that pair with one pair of chinos or smart trousers, plus one or two dresses or jumpsuits.
5. Dressy night outfits (2): a suit or dinner jacket with two shirts and ties, or two cocktail dresses or gowns. One dress can be restyled with different accessories.
6. Theme night piece (1): a white outfit doubles as smart casual.
7. Layers (2): a cardigan or light knit and a packable rain jacket.
8. Shoes (3-4): walking trainers, sandals or pool shoes, and smart evening shoes. Add water shoes for beach ports.
9. Accessories: sun hat, sunglasses, a scarf or sarong for churches, a small evening bag, and a day backpack or crossbody bag.
10. Extras: sleepwear, underwear and socks for 7-8 days, a gym kit if you will use it, and a lanyard for your cruise card.

This list fits comfortably in one medium suitcase per person, plus a carry-on for the first day, when your main luggage may not reach your cabin until the afternoon. Pack swimwear, medication and a change of clothes in the carry-on. River cruises are more casual and need less. Our Viking river cruise packing list covers that style of trip.

What not to wear on a cruise

• Swimwear or wet clothes in dining rooms: no line allows this in its restaurants, and Virgin Voyages, which has no dress code, still asks guests to wear more than a swimsuit.
• Bare feet indoors: shoes are required in indoor public areas.
• Bathrobes and pyjamas away from the spa or your cabin: the exception is an organised pyjama party.
• Shorts, vests and caps at dinner: these are fine at the buffet on most lines, but not in the main dining room or specialty restaurants in the evening.
• Ripped jeans, hoodies and sportswear on evenings with a dress code: NCL now lists several of these on restaurant signs, and they fall short of the code on Cunard and P&O.
• Camouflage clothing on Caribbean port days: several Caribbean countries, including Barbados, Jamaica and Trinidad and Tobago, restrict civilians from wearing camouflage, so leave it at home.

Laundry, irons and packing light

Bring fewer clothes and plan to re-wear them. Most ships offer a paid laundry and pressing service, and many lines run good-value “fill a bag” laundry deals partway through the cruise. Some ships, including many P&O and Cunard ships and some Princess ships, have self-service launderettes. Most lines ban irons and steamers in cabins because they are a fire risk, so use the pressing service or pack crease-resistant fabrics. Hanging clothes in the bathroom while you shower also helps creases drop out. A few multi-purpose pieces will serve you better than a full suitcase.

Rain jackets and warm layers matter most in Alaska, especially if you’re planning a day ashore at the Juneau cruise port where showers are common even in July.

If you are still deciding on an outfit for the dressiest evenings, our guide to cruise formal night dresses covers styles, fabrics and each line’s rules.

FAQs

Do you have to dress up every night on a cruise?

No. Most evenings are smart casual, and only one to three nights a week are dressier on most lines. If you would rather not dress up, the buffet and casual venues stay relaxed every night.

Can you wear jeans on a cruise?

Yes, during the day on any line. In the evening, smart dark jeans are fine on Royal Caribbean, Carnival, NCL, MSC and Virgin Voyages, but not in the main restaurants on Cunard or on P&O formal nights. Ripped jeans are increasingly unwelcome at dinner.

What do you wear on a cruise formal night?

On mainstream lines, men can wear a suit or a jacket with smart trousers, and women can wear a cocktail dress or dressy separates. On Cunard Gala Evenings and P&O Black Tie nights, dinner jackets, dark suits, long gowns and cocktail dresses are the norm.

How many outfits do I need for a 7-day cruise?

Plan on roughly five or six daytime outfits, two swimsuits, three or four smart casual evening outfits and two dressy outfits, all mixed and matched from a small capsule wardrobe. Laundry services let you re-wear favourites.

Can you wear shorts to dinner on a cruise?

Shorts are usually fine at the buffet but not in the main dining room or specialty restaurants in the evening. NCL, one of the most relaxed lines, now asks guests not to wear shorts in some of its specialty restaurants.

The best cruise formal night dresses are wrinkle-resistant, easy to walk in and matched to your cruise line’s actual dress code. A knee-length or midi cocktail dress in matte jersey or crepe suits most ships, while a full-length gown fits in best on Cunard, P&O Cruises Black Tie nights and Princess. Pair it with a low block heel and a light wrap, and you are ready for almost any dining room at sea.

What counts as “formal” varies widely between cruise lines, and the names keep changing. This guide covers the rules line by line, then the styles, fabrics, shoes and packing habits that make a dress work on a moving ship. For the rest of your suitcase, see our complete guide to what to wear on a cruise.

Cruise formal night rules by cruise line

Dress codes are updated often, and the number of dressy evenings depends on your ship and itinerary. Treat the table below as a guide for late 2026, and confirm details in your cruise line’s pre-departure information or daily program.

A few details are worth knowing before you shop:

• Cunard takes evenings most seriously. Gala Evenings may be themed, such as a Black and White Ball, so check your voyage before choosing a color.
• P&O Cruises keeps its Black Tie code on Celebration Nights, with at least one per cruise. Denim and shorts are not permitted in Black Tie venues.
• Virgin Voyages and Viking have no formal nights. Virgin holds a red-themed Scarlet Night, and Viking asks for elegant casual dress.
• Enforcement is generally relaxed on Carnival and Royal Caribbean, and stricter on Cunard. On the more relaxed lines, you will still see everything from sundresses to sequins.

Line character matters as much as the written rules. Our ranking of the poshest and least posh cruise lines gives a good sense of how dressed-up your fellow passengers are likely to be.

The best styles of cruise formal night dresses

Shoppers searching for formal dresses for a cruise will find everything from prom gowns to sundresses. These styles of cruise formal night dresses are the most practical for ship life.

Cocktail dresses for cruise ships

A knee-length or tea-length cocktail dress is the safest all-round choice. It meets the code on all of the lines above, packs small and is easy to manage on stairs. A sheath or fit-and-flare shape in navy, emerald or black works across several itineraries.

Midi dresses

Midi lengths look more dressed up than knee length and need less fabric management than a gown. They also suit a dinner followed by a show, when you may spend hours sitting and walking between venues.

Full-length gowns and maxi dresses

A column or softly draped maxi is the natural pick for Cunard and P&O Black Tie evenings. Avoid long trains and heavily layered skirts. Ship corridors are narrow, and a hem that catches underfoot on a staircase is a real hazard when the ship is moving.

Cruise dresses with sleeves

Dining rooms and theaters are often heavily air-conditioned, so sleeves are practical as well as flattering. Long lace or sheer sleeves keep a dress formal. On an Alaska or northern Europe sailing, a long-sleeved dress in a heavier fabric usually makes more sense than a strapless one with a wrap.

Dressy alternatives

A dress is not compulsory. Carnival, Princess, Cunard and P&O all list pantsuits or smart trouser suits among acceptable options, and a well-cut jumpsuit in a dressy fabric generally reads the same way.

Fabrics that resist wrinkles and creases

Fabric matters more for cruise formal night dresses than for almost any other vacation outfit, because pressing options on board are limited. Polyester, wool, lyocell and spandex blends resist wrinkling well, while cotton, rayon and silk crease easily unless blended with something more resilient.

Think about the weather too. Light chiffon is pretty on a warm evening, but it can blow about on an open deck. A weightier knit is much better behaved if your evening includes photos outdoors.

The best shoes for a moving ship

Even large ships move in rough weather, and the floors around dining rooms can be slick. Stilettos are the shoe most likely to cause trouble. Look for:

• Block heels, wedges or dressy flats with a stable base
• Ankle straps or a secure fit that will not slip off on stairs
• Soles with some grip, particularly if you plan to step outside on deck
• Shoes you have already worn for a full evening at home

If you do want to wear high heels, keep them for the dining room and pack foldable flats in a clutch for the walk back to your cabin.

How to pack a formal dress for a cruise

Most ships restrict irons and steamers because of the fire risk, so getting a dress on board smooth is half the job. A few lines are more flexible: Carnival has been reported to keep irons in self-service laundry rooms, and Norwegian to lend a limited number through housekeeping. Others, including Royal Caribbean and Celebrity, offer paid pressing instead.

1. Roll knits and fold structured dresses along natural seams, with tissue paper at the folds.
2. Keep your dress in your carry-on if you can. Checked bags can arrive at your cabin late on embarkation day, and on many ships the first formal night is day two. A carry-on removes that small risk.
3. Hang it up as soon as you board. Most light creases drop out within a day.
4. Use bathroom steam by hanging the dress away from water during a hot shower, or use a wrinkle-release spray.
5. Book pressing early if you need it, since the service tends to be busiest before formal evenings.

Our cruise packing tips from experienced cruisers cover more ways to save space.

One dress, two formal nights

You rarely need a new outfit for each evening. Bring one dress in a solid color, then change the look with a shawl, statement earrings or different shoes. Solid colors also tend to photograph well for the formal portraits many ships offer on these nights.

FAQs

Do you have to wear a gown on formal night?

No. Cocktail dresses are accepted on every major line that holds formal nights, including Cunard and P&O Cruises. A floor-length gown is an option, and it fits in best on Cunard, P&O Black Tie nights and Princess.

Are long dresses or short dresses better for a cruise formal night?

Either works. Knee-length and midi dresses are easier on stairs and in a moving ship, while a maxi feels more occasion-ready. If you choose a maxi, hem it to clear the floor in the shoes you will actually wear.

Can I bring a steamer or iron for my dress?

Usually not. Most lines treat irons and steamers as fire hazards. Pack a wrinkle-resistant dress, use a release spray or bathroom steam, or pay for the ship’s pressing service. Carnival has been reported to offer irons in self-service laundry rooms.

What happens if I do not want to dress up?

On most ships you can skip it and eat at the buffet or a casual venue, which stay open with a more relaxed code. The formal code generally applies to the main dining room and some bars and lounges.

How many dresses do I need for a 7-night cruise?

One or two is enough on most lines, because a 7-night sailing usually has two formal nights. One dress can cover both if you change the wrap, jewelry and shoes.