A hat shop in London on Regent Street near Oxford Circus, newly opened at the start of Changeless. Run by Madame Lefoux. Ivy Tunstell takes care of Chapeau de Poupe while Madame Lefoux is traveling with Lady Maccon during Blameless. During her supervision, hairmuffs become all the rage in London. After Madame Lefoux becomes a drone for the Woolsey Hive, Sandelio de Rabiffano takes over running the shop.