We were asked to convert a small shop in a big shopping mall to a clothing store which sells Pierre Cardin female clothes to display luxury collections of black, white and cream gowns. We decided to change this small shop to a big window shop to show the space larger . this strategy let us create an integrated form Choosing a stair form for window shop and the way of its location in the shop to display the items better and create a movement pattern for the customers. To extend this form toward the space considering the necessary functions prepared a window shop to display the items suitably as well as using it as fitting room, desk seller and store. The mirrors in ceiling have created a different understanding of space and items for customers which present a different experience inside the shop by movement of customer.