The most popular and widely-recognized Vietnamese national costume is the Áo Dài. Áo Dài was once worn by both genders but today it is worn mainly by women, except for certain important traditional culture-related occasions where some men do wear it. Áo Dài consists of a long gown with a slit on both sides, worn over cotton or silk trousers. White Áo dài is the required uniform for girls in many high schools and other colors for student in some Universities. In some types of offices (e.g. receptionists, secretaries, tour guides), women are also required to wear Áo Dài.
In daily life, the traditional Vietnamese styles are now replaced by Western styles. Traditional clothing is worn instead on special occasions, with the exception of the white Áo Dài commonly seen with high school girls.