The Cheongsam, or Qipao in Mandarin, is a highly popular Chinese garment consisting of a one-piece, tight-fitting dress that generally comes down to the knees. Worn primarily by women, the dress is believed by most to have developed during the Qing Dynasty. It became popularized during the 1920s and 1930s when elite and upper class women began to wear it, particularly in Shanghai, only for its use to dwindle during the Communist Revolution. The style continued to flourish in Hong Kong, however, where many Shanghainese tailors fled. A recent resurgence has found the dress to be back in style both in Hong Kong and in Mainland China, particularly in Shanghai, for formal occasions or work attire.