Among the poinnts for consideration in the designing of garments，beauty and　function are，of course，essential. To satisfy demands in these two aspects of garment construction，an accurate measurement of bodi1y dimensions and proportion indorsed by a continued observation on correlations，quantitative and qualitative，among such physical factors as bone-structure，muscle and fat layers，over phases of developmental
and physical changes must be established， thus to determine the measurements for the
product garment. Unlike statues， human bodies are constantly in motion and growth involving correlated shifts among the dimensions of various sections and parts，specially the waist size. Technical difficulty and the consequent inaccuracy in measuring and the failure in assessment of the proper size for the waist，therefore， cause disconfort，poorer sanitary and functional fitness，and damage the appearance. The waist size being such a drastic factor in the making and wearing of slacks，shorts，and skirts etc.，the authors in this study attempted to obtain basic data and formulae for determining the proper waist size，by measuring a group of subjects，women students of age groups between 18 and 19，continuously over a period of time.