A yem (Vietnamese: yếm) is a traditional Vietnamese bodice used primarily as an undergarment that was once worn by Vietnamese women across all classes. There exists a modern variant called the áo yếm, but the historical garment was simply called a yem. It was most usually worn underneath a blouse or overcoat, for modesty's sake.
It is a simple garment with many variations from its basic form, which is a simple, usually diamond or square-cut piece of cloth draped over a woman's chest with strings to tie at the neck and back.
The yem originated from the Chinese dudou, a variant of similar undergarments used in China since antiquity whose use spread under the Ming and Qing dynasties. It became popular in northern Vietnam. Unlike other Vietnamese clothing that helped to segregate the classes, the unseen yem were worn as an undergarment by Vietnamese women of all walks of life, from peasant women toiling in the fields to imperial consorts. It is an integral part of the Áo tứ thân costume, which it is often worn underneath.
Chinese style clothing which was forced on Vietnamese people by the Nguyen dynasty took the place of the yem and skirt (váy đụp). Trousers have been adopted by White H'mong. The trousers replaced the traditional skirts of the females of the White Hmong. The tunics and trouser clothing of the Han Chinese on the Ming tradition was worn by the Vietnamese. The Ao Dai was created when tucks which were close fitting and compact were added in the 1920s to this Chinese style. Trousers and tunics on the Chinese pattern in 1774 were ordered by the Vo Vuong Emperor to replace the sarong type Vietnamese clothing. The Chinese clothing in the form of trousers and tunic were mandated by the Vietnamese Nguyen government. It was up to the 1920s in Vietnam's north area in isolated hamlets wear skirts were worn. The Chinese Ming dynasty, Tang dynasty, and Han dynasty clothing was ordered to be adopted by Vietnamese military and bureaucrats by the Nguyen Lord Nguyễn Phúc Khoát (Nguyen The Tong). Pants were mandated by the Nguyen in 1744 and the Cheongsam Chinese clothing inspired the Ao Dai. Chinese clothing started having an impact on Vietnamese dress in the Ly dynasty. The current Ao Dai was introduced b the Nguyen Lords.
While it was worn across classes, the material and colors used to make yems varied widely based upon the person's social status and the occasion. Commoner women usually wore yem in simple blacks and whites for day to day use, whereas during special occasions they could opt for more festive, brighter colors such as red and pink. Indeed, much of Vietnamese poetry has been dedicated to the beauty of women in their vermilion bodices (yếm đào).
While the bottom of the yem are v-shaped, there were different styles for the top of the garment which covered the neck, the most common two variations being the rounded neck or the v-shaped neck style.
In modern Vietnam
Fashion designers, in their constant quest to revitalize interest in traditional costumes - as well as reinvent them - have created many new collections of yem. The modernized form of the garment is slightly different and is called áo yếm rather than yems, the latter referring to the historical garment. Áo yếm has proven to be quite popular with young women, perhaps due to its similarity to the Western halter top.
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