The purposes of this study is to investigate the characteristics of historicism in modern fashion and to introduce the appropriate approaching and application method of costume history. As one of the characteristic of Post modernism, historicism is an important theme in modern fashion. In this study, the background and the characteristic of Post modernism is considered and the historicism in the Post modern architecture and literature is studied. Next, through the artworks of Vivienne Westwood and Christian Lacroix who are excellent in the modernization of historical costume, the historicism in modern fashion is studied. The characteristic of historicism in Post modem architecture and literature comes from the nostalgia, aspiration for the past, and recurrence to the nature. It is not the revival of the past but the crossover of the past and the present. The characteristics of historicism in modern fashion are as follows. ·form; style, silhouette, and items that are shown in the historical costume come with the mixture of modem textile, new technique, and modem design. ·Materials and patterns; classical and romantic patterns, the artwork of the artist, and the fabric which is remake of remains are used. ·Technique; Tailoring techniques and the pattern making of the historical costume are used. ·Trimmings and etc.; Lots of handworks, trimmings and accessaries in that are inspired from the past are used. These elements are not come from a certain place and time but mixed surpassing places and times. With that, not only the form and the position of wearing but the meaning and purpose of wearing are changed.