Áo dài is a modernized Vietnamese national garment consisting of a long split tunic worn over silk trousers. It can serve as formalwear for both men and women. Áo translates as shirt and dài means "long". The term can also be used to describe any clothing attire that consists of a long tunic, such as nhật bình.
Vietnamese students wearing Áo dài, 2013
A woman wearing white Áo dài, May 2021
Portrait of Tôn Thất Hiệp (1653–1675). He is dressed in a cross-collared robe (áo giao lĩnh) which was commonly worn by all social castes of Vietnam before the 19th century
Two women wear áo ngũ thân, the predecessor of the áo dài worn in the nineteenth and early twentieth centuries depicted on the postcard.
A tunic is a garment for the body, usually simple in style, reaching from the shoulders to a length somewhere between the hips and the knees. The name derives from the Latin tunica, the basic garment worn by both men and women in Ancient Rome, which in turn was based on earlier Greek garments that covered wearers' waists.
Coptic-Byzantine wool tunic, small enough for a child (6th century AD) (Walters Art Museum)
Germanic tunic of the 4th century AD found in the Thorsberg moor
20th-century Yemenite Jews dressed in tunics