A Nigerian wedding invitation often arrives with a price list. It is not for the gift registry. It is for the fabric you are expected to wear.

That fabric is aso-ebi, Yoruba for “family cloth”. The couple or their families choose a fabric and colours for the day, and guests who want to show they belong buy it, take it to a tailor and wear it to the wedding. In a crowded hall, aso-ebi tells everyone at a glance who is family, who is a close friend and whose side they are on.

Where it comes from

Aso-ebi began as a Yoruba tradition. Family members wore the same cloth at important ceremonies, such as weddings, funerals, chieftaincy celebrations and naming ceremonies, as a sign of unity. Over time the circle widened beyond blood relatives to include friends, colleagues and anyone close to the celebrants. The custom spread from Yoruba communities across Nigeria and into Ghana and other parts of West Africa.

How it works today

The couple, the families or a coordinator choose the fabric, which can be lace, ankara, George wrapper, silk or anything else. Many weddings have different aso-ebi for different groups: one for the bride’s family, one for the groom’s, one for the bride’s friends, and sometimes one for the groom’s friends. Women often buy a gele, the stiff head tie, to match, and men may buy a cap, the fila.

Guests pay for the fabric, collect it, and have it sewn into outfits of their choice. That is where the creativity comes in. The fabric is the same, but tailors turn it into gowns, wrappers and blouses, jumpsuits, agbada or kaftans, each different. Weddings where every guest in one colour wears a different style make for some of the most dramatic photographs in West African wedding culture.

The business around it

Aso-ebi supports a large industry. Fabric sellers supply the cloth in bulk, coordinators handle orders, tailors and fashion designers work for weeks before big weddings, and gele stylists tie head wraps on the morning of the event. Some couples use aso-ebi sales to cover part of the cost of the wedding, which has become a point of debate: is it a gift of belonging, or a charge for attending?

The etiquette

You usually don’t have to buy it. Guests who don’t buy aso-ebi are normally welcome to attend in their own clothes. In practice, some hosts give aso-ebi wearers special treatment, such as preferred seating, souvenirs or food served first, which puts pressure on guests.

Buy early. Popular fabrics can sell out, and tailors fill up in the weeks before the wedding season.

Plan the style with your tailor. The fabric is fixed; your cut is where you stand out. Bring a clear picture, and allow time for a fitting.

Don’t wear it to the wrong event. Aso-ebi is tied to a particular celebration. Wearing someone else’s wedding aso-ebi to a different family’s event is a known faux pas.

Beyond Nigeria

In Ghana, the custom has merged with local practice. Families already chose a common cloth for funerals and weddings, and many Ghanaian weddings now have their own version with a chosen print or kente. Across the diaspora, from London to Houston, aso-ebi is the reason a hall full of guests can look like a single colour scheme.

In the wedding photographs, the aso-ebi shows who turned up for the couple. That is why so many guests pay for it.