A system usable by a processor to enable a user to select a type of garment and view an image of the pattern for the garment. Under direction of the system, the processor enables the user to input data relating to the characteristics of an intended wearer of the garment, and the processor generates a graphical model of the intended wearer. Also, under direction of the system, the processor enables the user to view a simulation of the garment worn on the graphical model. Furthermore, the system changes the pattern image in response to changes the user may make to the garment or the graphical model.