Lately, unique hats, which worn by iconic figures in fashion industry, like Anna Piaggi and Isabella Blow to express the originality and self-awareness, received attention from the mass media along with their styles. The purpose of this research is to investigate, analyze, and media-specific characteristics of objet hats which are used to show various items, shape up targets, and express the concept of attires. In order to fulfill this, this study focuses on objet hat designers who have been influential from the 1980's to recent years. As for the research methodologies, this study conducts investigating examples from fashion related books, research papers, and websites along with literary research. Study of objet hat is based on cases and works of designer in objet hat in contemporary fashion expression shape. As a result, objet hat, First, the experimental work to maximize the effectiveness as a fashion objet containing the concept of designer in the runway shows. Second, as pieces displayed on art galleries and museums, objet hats are recognized as artistically defined world of conceptual designers' imaginations. Third, objet hats function as ways of celebrities' expression, who affects the public as fashion leaders. Lastly, objet hat designers's activities operate the story and notion contained in the work through a variety of genres. Objet hats, an independent fashion genre, which symbolize creativity and freedom, influenced the fashion industry with astonishing materials, forms, and decorations.