For the purpose of new development of silk to western clothes for men and ladies, the effect of silk on the light reflection was investigated using different yarn size of cocoon from the silkworm, i.e., Ariake and Shin-akebono. The light reflection property of the yarn was measured using a gonio-photometer on the series of samples such as raw silk yarn, its degummed silk yarn and twisted yarns (three-and two-ply yarns) before and after degumming. A number of twists is 0, 500, 1, 000 1, 500 and 2, 000 T/m.
1. The intensity of reflected light of silk yarn decreased with increasing of size of silk yarn and was little influenced by the size of cocoon filament yarn.
2. The intensity of reflected light of degummed silk yarn decreased with increasing of a number of twists of raw silk of Ariake and Shin-akebono.
3. The degumming treatment of the raw silk and of the twisted silk yarn (three- and two-ply yarns) increased the luster value, because the triangular cross section of silk fibroin appeared. However, the twisted yarn was influenced a little by degumming on the light reflection.
4. The reflection curves of degummed silk yarns were compared with those of two kind of polyester yarn, one of which is triangle in cross-section and the other is circular. It was found that the silk yarns might have graceful luster and the other polyester fibers might have intensive luster.

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The garment selection support information in the 3-dimensional (3D) fashion factory boutique system was extracted for young women as consumers. The 234 words describing the design images of the garments were collected from a variety of recent fashion magazines and were classified based on a questionnaire. The selected ten key words for design images were: 1, marine style; 2. ethnic style; 3. retro style; 4. casual style; 5. school uniform style; 6. boyish style; 7. hard style; 8. girlish style; 9. simple style; and 10. adult style.
Using these ten image words, we classified the design images of 60 garments and clarified the design elements of each group's garment from the evaluations system of classifying images into five grades. We extracted four components of the images of these garment designs and through detailed clustering, they were classified into eight images. The features of the design elements were roughly grouped into three clusters. The adult style image (including: the images of 7, 9, and 10) has an unpatterned top and bottom and a tight-fitting bottom. The girlish style image (including: the images of 1, 2, and 3&8) has thin and soft material for the top and bottom and chromatic color with a pattern design for the top and/or the bottom. The casual style image (including: the images of 5 and 4&6) has an unpatterned top and a slightly stiff, thick, simple, and dark material for the bottom.
3D simulations of typical garments for each image were performed and the image models for support of design selection were constructed.

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