The Purpose of this study is to comprehend the form of Post-modernism in 1980~90 Fashion by comparing to the representative form of Modernism. For empirical data, photographs and critics about fashion were collected from Vogue fashion magazine to differentiate from other studies which is mostly analysed from collection. The results are as follows: The Modernism in fashion can be epitomized simple and functional form as a rational costume and Post-modern fashion expresses all sorts of emotion as a react of rational theme of modernism with manners of anti-formal pluralism such as pastiche, parody and Kitsch. The fashion in 1980-90s in Vogue expressed as follow :1) The Postmodernism is well exploited around 1990 and costrained by traditional and classical Mode. 2) The other main character of Postmodernism, romantic eroticism is broadly expressed with material and slim curved body conscious line. 3) The Modernism and Postmodernism coexisted in the end of 1990, in more matured format.