ca. 1855 Arrival of H. M. the Queen to the Palais de Saint-Cloud by Charles-Louis Müller (Royal Collection)
This shows how two Ladies with access to top-of-the-line dress, Queen Victoria and Empress Eugénie, dressed by day to meet in 1855. Queen Victoria brought her children while the Prince Imperial was a year in the future. Seeing Victoria with all of her children may have made Napoleon III think about the need for an heir.
Queen V ictoria and the Empress were lifelong friends. When ousted, the Bonapartes moved to Farnborough in the UK. Farnborough is now known for its biennial air show.
This image is from The Art Tribune.