Love these portraits of legendary Countess Mona Von Bismarck taken by Cecil Beaton in Hotel Lambert ( which used to belong to the Countess). For me the most amazing part on the photo  is how the Balenciaga gown on Countess Von Bismarck fits the atmosphere of the sitting room of the chateau particulier! Amazing combination of the midcentury elegance with such a traditional detail of the rococo period dresses as the sack back looks so regal and chic!  This is a true timeless elegance! I'm sure you agree with me.

                        

           Robe a la Francaise  with a sack back. Mid XVIII century.