This thesis is an account of an investigation into the problems associated with the production of patterns to ensure a garment of satisfactory fit. Essentially, the method described in this thesis consists of defining a number of crucial shaping points on the body and measuring their spatial co-ordinates. A method is then developed which translates these three-dimensional co-ordinates into patterns whose shapes are such that when joined together with darts suitably positioned, the two dimensional pieces of cloth cut from them are transformed into a threedimensional garment of accurate fit. A computer program has been developed which will: (i) read the three-dimensional co-ordinates of the human body, (ii) calculate the accurate angle of dart needed to be inserted into the pattern to convert it into a three-dimensional'shell', (iii) plot a full size skin and/or block pattern which when sewn into a garment will fit the measured body perfectly.