The life of Rose Bertin is a novel. A poor young girl, she leaves her Picardy to come and work in Paris. Talented, endearing, she is appreciated and noticed. She quickly flies on her own and opens her own store: the Grand Mogol. The reign of Louis XV is coming to an end. Soon her path takes that of Versailles and her life is lit up by a most unexpected bond: a flamboyant and royal friendship. Hairstyle à la Belle Poule, pouf of feelings, hat of the late Opera, bonnet of the spirit seeker or witch, Quès Aco. Under Louis XVI, fashions suddenly begin to explode with diversity, invention. Like never before. It is because they have found a guide in Marie-Antoinette and especially because Marie-Antoinette has found her "minister of fashions". "The divine Bertin". And Paris becomes the capital of good taste. Rose Bertin is in demand in all the Courts of Europe. She has a tumultuous affair with the Chevalier d'Eon; but her heart beats for a Russian prince. The fates of those soon to be called Madame du Costume and Madame Déficit are intimately linked. They will peak and tip at the same moments. Their lives follow parallel paths that meet at Versailles and separate at "Place de la Révolution" in October 1793. Only the ghosts remain. In the evening of her life, Rose remembers.