Áo dài at the University of Texas at Austin. The difficulties of working while wearing an ao dai link the dress to frailty and innocence, she wrote. Vietnamese writers who favor the use of the ao dai as a school uniform cite the inconvenience of wearing it as an advantage, a way of teaching students feminine behavior such as modesty, caution, and a refined manner. The ao dai is featured in an array of Vietnam-themed or related movies. In "Good Morning, Vietnam" (1987), Robin Williams's character is wowed by ao dai-clad women when he first arrives in Saigon. The 1992 films "Indochine"
Traditional Thai clothing and the upper class in Bangkok, and nowadays is used in select circumstances as a national costume. The formal Thai costume, known in Thai as (, literally "Thai dress of royal endorsement"), includes several sets of dress, designed as the Thai national costume in formal occasions. Although described and intended for use as national costume, they are of relatively modern origins, having been conceived in the second half of the 20th century. Traditional Thai clothing Traditional Thai clothing is called "chut thai" (), which literally means "Thai outfit". It can be worn by men, women, and children. Chut thai for