In 1719, aged 23, Suzanne-Marie-Henriette de Boulainvilliers married Gabriel Bernard, Comte de Rieux and son of the famous banker Samuel Bernard, who would later become president of the Chambre des Enquêtes at the Parliament of Paris. This portrait was exhibited at the 1742 Salon and is now held at the Musée Cognacq-Jay. It shows Madame de Rieux aged around forty five, dressed in her ball attire.
She is wearing a coat that covers her gown and is about to hide her face with the mask in her hand. In this portrait, La Tour excels in depicting the shimmer of the coat fabric and the pleats in the blue ribbon.
The unusual size of this portrait also demonstrates the pastellist's ability to go beyond the traditional bust format against a plain background. The president's wife is depicted sitting in elegant surroundings reminiscent of those found in a private mansion.
La Tour also painted a portrait of President de Rieux, which was exhibited at the 1741 Salon and is now held at the J. Paul Getty Museum in Los Angeles. These two portraits, which are not pendants, stayed in the models' family until 1920 and remain in their original gilded wooden frames.