Áo dài her bust and curves. Although the dress covers the entire body, it is thought to be provocative, especially when it is made of thin fabric. "The ao dai covers everything, but hides nothing", according to one saying. The dress must be individually fitted and usually requires several weeks for a tailor to complete. An ao dai costs about $200 in the United States and about $40 in Vietnam. "Symbolically, the ao dai invokes nostalgia and timelessness associated with a gendered image of the homeland for which many Vietnamese people throughout the diaspora yearn," wrote Nhi T. Lieu, an assistant professor
The dress first large-scale scientific study on the dress was published in "Current Biology" three months after the image went viral. The study, which involved 1,400 respondents, found that 57% saw the dress as blue and black; 30% saw it as white and gold; 11% saw it as blue and brown; and 10% could switch between any of the colour combinations. A small number saw it as blue and gold. Women and older people disproportionately saw the dress as white and gold. The researchers further found that if the dress was shown in artificial yellow-coloured lighting almost all respondents saw the dress