Áo dài the "ngũ thân" as a modern dress in the 1920s and 1930s. The updated look was promoted by the artists and magazines of Tự Lực văn đoàn (Self-Reliant Literary Group) as a national costume for the modern era. In the 1950s, Saigon designers tightened the fit to produce the version worn by Vietnamese women today. The dress was extremely popular in South Vietnam in the 1960s and early 1970s. On Tết and other occasions, Vietnamese men may wear an "áo gấm" (brocade robe), a version of the ao dai made of thicker fabric. Academic commentary on the ao dai emphasizes
Áo dài on both sides, features preserved in the later ao dai. Compared to a modern ao dai, the front and back flaps were much broader and the fit looser and much shorter. It had a high collar and was buttoned in the same fashion as a modern ao dai. Women could wear the dress with the top few buttons undone, revealing a glimpse of their "yếm" underneath. Huế's Đồng Khánh Girl's High School, which opened in 1917, was widely praised for the ao dai uniform worn by its students. The first modernized ao dai appeared at a Paris fashion show in