The purpose of this thesis is to investigate the way how the image of Korean costume could be introduced into the world fashion market, and appreciated by foreigners. For this purpose. 1 focus on analyzing the works of Lee, Yong-Hee presented in Pret-a-Porter Paris Collection and interpreting the image of Korean costume in her works. I propose some imperative factors essential to promote the participating of Korean costume into the world fashion market. Firstly. the Korean costume should be reevaluated and moderated in a degree, to be acceptable or accessible to foreigners. Secondly, the commerciality is to be stressed in the light of fashion industry dealing with the practical function of the costume. Thirdly, Our open-mindness to other culture would also make our costume to be more prevalent in world fashion market paradoxically. The Seoul Collection in 2000 fall was opened by Korean government on the recognition that the fashion industry is highly productive and helpful not only in cultural basis but in economics.