1. A method of predictively fitting a respirator to a specific user, the method comprising: retrieving respirator shape data representative of a shape of a respirator; defining facial shape data representative of a facial shape of a facial area; modeling said facial shape data in a plurality of facial positions, wherein each of said facial positions correspond to a different position of said facial area; overlaying said respirator represented by said respirator shape data upon said facial area represented by said facial shape data, wherein said respirator is overlaid upon said facial area in said plurality of facial positions; determining whether said respirator fits said facial area in said plurality of facial positions; and generating a recommendation for display to a user based upon whether said respirator fit said facial area in said plurality of facial positions.