A fashion designer, like any other designer, need to have knowledge about the various factors that can affect the object configuration, need to have knowledge about the users and producers demands, the form, the creative processes, the materials and manufacturing processes, the production costs, etc. However, despite the clothing object being, apparently, very similar to the project of any object belonging to the design field, creation , development and production of clothing objects linked to the notion of fashion in Brazil only became be thought and considered as an activity belonging to the design field in the late 1990s and early twenty-first century. Nevertheless, this incorporation presented, and still presents, conflicts and reactions of both, clothing object producers regarding concepts and values related to the design field, as well as institutions and agents traditionally belonging to the design field in relation to the notions and values associated with fashion phenomenon and with the garment objects production. Thus, if we consider that the development of clothing objects and of objects traditionally belonging to the design field has a very similar structure, we can say that, objectively, there is not, and probably never existed, itself a division between the clothing objects design field and the design field. However, in Brazil, there was a notion that the clothing object linked to the notion of fashion is something not belonging to the design field and, from the late 1990s and early twenty-first century, began to change, indicating changes in the structure and functioning of the clothing objects production field. Therefore, this PhD research analyzes, using as the theoretical work of Pierre Bourdieu, the constitution, structure and functioning of this field in Brazil, analyzing how the positions and relationships between producers, receivers and legitimation, reproduction and consecration institutions of the field work and interfere with specific field notions and values, with the practices associated with this field agents and, consequently, the clothing objects production in Brazil and the delineation and definition of the clothing design field, named currently as a fashion designer.