This paper proposed the sizing system for women's upper clothes in order to improve clothing fitness and raise the productivity. The sizing system was classified according to 5 body types and 5 age groups. The size intervals of the basic dimensions were established at regular intervals centering around their means. The size interval of stature was 8cm centering around 158cm and that of bust girth 4cm centering around 84cm and that of hip girth 4cm centering around 92cm. Frequency distribution on the size of upper clothes showed that the most frequent size were 96-96-150 in the longest-fattest type, 88-96-158 in the long-fatter type, 84-92-158 in the medium length-fat type, 84-92-166 in the Short-balanced type, and 76-88-158 and 80-88-158 in the medium length-balanced type. The number of the sizes of upper clothes, which had frequencies more than 5%, was 32 and each size was presented with waist girth, back waist length and sleeve length. The size system classified by age group had 22 cases in the early twenties, 15 cases in the late twenties, 21 cases in the early thirties, 19 cases in the late thirties, and 15 cases in the forties.
