A wedding is a long day in one dress. Here is how to choose one that answers the code and is still comfortable at eleven at night.
A wedding asks more of a dress than almost any other occasion. You will wear it for ten hours. You will sit through a ceremony, stand through a drinks reception, sit again for a long dinner, and then dance in it.
Most guides talk about the dress code and stop. The code matters, and so does the ten hours, and the second part is where the actual decision lives.
The Codes, Quickly
Black tie means floor length in an evening fabric, with a heel and one good piece of jewelry.
Black tie optional means a gown is welcome and a formal midi is equally correct.
Formal means long or a dressy midi, with more room for color and print.
Semi-formal or cocktail means an occasion dress that stops short of the floor, which is where most wedding guest dresses live.
Dressy casual or garden party means a floral or printed midi in a lighter fabric, with a flat or block heel because it almost always means grass.
Beach formal means long and floaty in a light fabric with a flat sandal.
The full wedding guest guide goes through each of these in more detail, including what to do when the invitation says nothing at all.
What to Skip, Regardless of Code
White, ivory, cream and champagne. Including a print that reads as white from across a room. The only exception is an explicit instruction from the couple.
A thin heel, if any part of the day is outdoors. Grass, gravel, cobbles and decking all defeat a stiletto. A block heel or a wedge lets you stand through the photographs and dance afterward.
Anything that needs holding up. Strapless bodices need attention all day, and a wedding is a day where your hands are usually full.
A fabric that creases across a lap. Linen-feel cloths and smooth heavy satins both show every hour you have spent sitting down. A crepe, a lace over a lining, a georgette or a patterned chiffon all recover on their own.
Shapes That Carry a Long Day
The A-Line
Fitted through the shoulder and bust, then falling away. Nothing is held anywhere below the waist, which is exactly what you want across ten hours.
The Empire Line
Seamed under the bust. The most comfortable occasion shape there is, and the easiest to get right without alterations.
The Wrap
Ties, so you set the waist yourself and can loosen it after dinner without anyone noticing. A lace or satin wrap midi is correct for semi-formal and cocktail both.
The Tiered or Smocked Maxi
Ideal for a garden party or a beach wedding. The smocking sets the waist, the tiers move in wind, and nothing needs altering.
The Fit and Flare
The most dramatic of the group and still comfortable at a table, as long as the waist sits at your natural waist rather than below it.
Most guides talk about the dress code and stop. The code matters, and so does the ten hours.
What to Check in the Listing
The size range first, and whether the dress is offered in one continuous range rather than a separate line, which usually means the cut has been graded properly rather than scaled up.
Then four details that tell you how the dress will actually behave.
What happens at the waist. Smocking, a tie, a drawstring, an elastic panel or a proper seam all mean you set the waist. A dress with none of these is asking to match your measurements exactly.
Whether it is lined. A lined dress hangs better, does not cling in a warm room and lasts longer. On lace and chiffon this matters most.
The shoulder-to-hem measurement. Midi covers anything from below the knee to the ankle. The number tells you which.
The sleeve. A flutter, a short sleeve or a lace sleeve answers the wrap question permanently, which is worth a great deal at an evening reception in a marquee. Long sleeve dress styles covers the shapes that work for fall and winter weddings.
Color and Print
Almost everything is open to you beyond white.
Deep jewel colors photograph beautifully in low light and read as correct at every code from cocktail upward. Burgundy, emerald, navy and plum all do this without effort.
Florals are the easiest thing in the world to wear to a wedding and always have been, particularly for a daytime or garden wedding.
Pastels belong to spring and summer afternoons.
Black is fine, particularly in the evening and particularly in a good fabric.
The one extra check is whether the couple have asked guests to avoid a color, usually because the bridal party are wearing it. It is always mentioned somewhere, on a website or in a message.
What to Carry
A small bag, big enough for a phone, a lipstick and a bandage, and no bigger, because you will be holding a drink in the other hand.
Something for your shoulders. Evenings drop, marquees get cold, and a wrap turns a strappy dress into one you can sit outdoors in.
Shoes you have already worn, and a second flatter pair in the car if you have one.
One Dress, Several Weddings
If you have a run of weddings in a season, buy one midi in a good fabric and change everything around it.
A heel, a clutch and a drop earring for the formal one. A flat sandal, a straw bag and bare shoulders for the garden one. A wrap, a boot and a deeper lip for the winter one.
One dress, three weddings, three different sets of photographs. It is the least glamorous advice here and the one that saves the most. If one of the weddings is a formal one, the black tie guide covers what changes.
The Day, Hour by Hour
It helps to think through the day rather than the dress, because the dress has to survive all of it and most of the difficulty arrives in the parts nobody pictures.
The ceremony is usually the coolest part and often the most formal. You will be seated on a hard chair or a pew, and you may be outdoors. This is the hour where a wrap earns its place.
The drinks reception is standing, on whatever surface the venue has, for anywhere between one and three hours. This is the part that decides whether the shoes were the right choice, and the part where a bag with a strap becomes very welcome.
The dinner is seated and long, often in a room that has warmed up considerably since the ceremony. A dress that creases hard across the lap will show it from this point onward, and a waist that you set yourself is worth a great deal by the time the speeches finish.
The evening is loud, warm and on your feet again, usually with a different set of guests arriving. A dress you can dance in without thinking about it is the whole point of every choice made earlier.
Alterations Worth Making
Two small changes turn an off-the-rack dress into one that looks made for you, and both are inexpensive.
A hem, taken up to the length you actually want in the shoes you will actually wear. On a midi, aim for the narrower part of the calf. On a maxi, aim to clear the floor by about half an inch.
A strap shortened, or a shoulder taken up. This is the change that quietly fixes a bodice that sits a little low, and it costs very little on most dresses.
Leave two weeks for both, and take the shoes with you to the fitting.
Wedding Guest Dresses in a Fuller Size Range
The Short Version
Answer the code with length and fabric, then choose the shape for a ten hour day. An A-line, empire or wrap will still be comfortable at eleven at night. Check the waist detail, the lining and the real hem measurement before you buy. Skip white, skip thin heels on grass, and bring something for your shoulders. Start with the plus-size edit.