It seems her two eldest sons and her daughter were there, as well as the Argentinian polo player friend of the Duke of Sussex. It appears the party was in Southampton USA and not in Southampton in England indeed.
56 likes, 0 comments - mariechantal22 on September 13, 2024: "Thank you for a fun and beautiful dinner @cdornano @luciedelafalaise La maison @sisleyparisofficial on South Audley street London . It’s Worth a visit! ♥️♥️".
1,573 likes, 46 comments - mariechantal22 on September 27, 2024: "This week, during the UN General Assembly (#UNGA), Jessica de Rothschild and myself were honored to host a reception in New York on behalf of @USAforUNHCR to discuss the transformative power of higher education for refugee women...