a straight, tight silk dress with a high neck and a slit (= cut) in the side of the skirt, in a style that became popular in China, especially Shanghai

A petite woman, dressed in a cheongsam, appeared. 来了一个身穿旗袍的娇小女人。

They all wear bright cheongsams that represent a 1960s take on traditional Shanghai style. 他们都穿着鲜艳的旗袍，体现了1960年代传统的上海风格。