The purpose of this study is to improve the fitness of clothes by producing patterns considering body proportions at a time of producing clothes for export through extracting factors comprising body types and conducting comparative analysis of proportions by body part using body indexes of Korean women in their 20s living in both Korea and foreign countries. The study results are as follows. Factor analysis by group was conducted for body indexes in order to examine body types of Koreans living overseas. As a results, six factors were extracted from all of three groups; Joseonjok(Koreans living in China), Goryeoin(Koreans living in Russia) and Korean residents in Japan, and their explanatory powers were 60.42%, 63.62%, 63.15%, respectively. Obesity factor was extracted as the 1st factor, and the groups showed differences in other factors. As a result of proportion comparison using body indexes of Koreans living in foreign countries and Korea, it was found that, in height item, when regarding the height as 100, the length of the lower part of the body was long in the order of Goryeoin. Joseonjok, Koreans living in Korea and Korean residents in Japan. Also in width item, when regarding the waist as a standard, it was observed that Joseonjok people have the shoulders, the breasts and the hips that look relatively wider comparing with the width of the waists because they have very narrow waists and the width between shoulder length is big. In addition, the study examined proportions of the breast thickness/the breast width, the waist thickness/the waist width, the hip thickness/the hip width to height. From the analysis, it was found that breasts of Koreans living in Korea are flattest while their waists are slender, and Goryeoin and Joseonjok have round body shapes from the waist to the breast.