Áo Tứ Thân or “4-part dress” is one of several traditional Vietnamese costumes.
Áo Tứ Thân is considered one of Vietnam's enduring relics, having been worn widely by women centuries before the Áo Dài. As Vietnam expanded southward, Áo Tứ Thân gradually became associated specifically with northern women.
Áo Tứ Thân was the dress of peasant women, which explains why it was often made with plain fabric in dark colors, except when it was to be worn at special occasions such as festivals or weddings. Regardless of its many different forms, the basic Áo tứ thân consists of:
Áo Tứ Thân in modern-day Vietnam (worn almost exclusively in northern-related festivals) tends to be extremely colorful, using different hues throughout the dress, from the tunic to the bodice and the skirt.
Áo Tứ Thân is now obsolete in terms of its daily use in Vietnam. However, it can be seen often in traditional occasions such as festivals, especially in northern Vietnam.
In southern Vietnam, the simpler silk pajamas costume Áo Bà Ba is preferred for day-to-day use.