La Magdeleine's costume is based on the holiday clothes used by the peasants belonging to the house of Cly, branch of the noble feudal Challand family.

On the apron are depicted, intertwined, five flowers that symbolize the villages of La Magdeleine: the gentian for Messelod, the daisy for Clou, the anemone for Brengon, the scrub rose for Vieu, the edelweiss for Artaz. The costume is completed by a white wool shawl and a cap on which only the flower relating to the village to which the costume refers is embroidered.