This study aims to develop the designs of new Hanbok women's pants by applying traditional Korean pants and the toile de Jouy expression. In terms of study method, theoretical research was conducted on Korean traditional Hanbok pants and toile de Jouy. New Hanbok women's pants reflecting the Korean image were designed, and virtual clothing was implemented. As a result, five designs of new hanbok women's pants were developed, details of which are as follows. First, the literature review derived the following design motifs for men's pants with traditional hanbok's hemline decoration, Sapok-baji, women's Sokbaji, Dan-sokgot, Salchang-gojaeng-yi, Neo-reun-baji, Malgun, and Pungcha-baji. Second, two patterns of toile de Jouy were developed with the Joseon Dynasty and Korean women's themes by the harmony of characters and surroundings, delicate drawings, story development, simple arrangement of colors, and motif arrangement. Third, six new hanbok women's pants designs were implemented through CLO 3D program-based virtual clothing. Design 1 used Neo-reun-baji as a motif and chambray fabric. It comprises a waistband, waist gathers, a side opening, and a belt. Design 2 brought up the image of women's Sokbaji, and broadcloth was used to make it look casual. Design 3 used Pungcha-baji as a motif and is a jumpsuit with short pants. The ankle bands, which used to tie the bottom of the hemline of men's pants, were attached to the bottom of the short pants to make the design look cute. Design 4 contained the components of Dan-sokgot and Salchang-gojaeng-yi and shoulder straps looking like suspenders, used denim fabric, and decorated with a wave pattern. Design 5 used Malgun as a motif with sateen fabric, showing a fullness silhouette. It features belt-tightening, crotch, and pintuck. The patterns of toile de Jouy were applied to all five designs of new Hanbok women's pants.