Léa Seydoux plays Sidonie Laborde, a lady in waiting to Queen Marie Antoinette. Laborde has a special relationship with the queen, constantly being invited to the Queen’s quarters to read to her, to talk, to sometimes be doted upon. Though she is a commoner, Laborde has access to the comings and goings of the upper class at the Palace of Versailles. She’s observes their lives as they go about their daily routine, as well as their scrambling during the oncoming revolt.