Abstract: A computer program for guiding the purchase of clothing articles may include a user profile. The user profile may comprise a data entry interface adapted to receive user preference data such as clothing sizing parameters, color preferences, and/or style preferences. The user profile may also include a sharing feature enabling a user to share preferences with other users. The computer program may also include a manufacturer sizing database containing clothing article dimensions. Furthermore, the computer program may include an article recommendation feature adapted to apply a recommendation algorithm to user preferences and to a plurality of purchase options so as to arrive at a set of recommended articles.