Beatrice, who shares two daughters — Sienna, four, and Athena, 11 months — with her husband Edoardo Mapelli Mozzi, was photographed smiling alongside her younger sister as they greeted Prince William and Kate Middleton outside the palace.
Eugenie, who has two sons — August, four, and Ernest, one — with her husband Jack Brooksbank, also looked delighted to be joining the gathering. She appeared happy to reunite with her cousin and his children, Prince George, Princess Charlotte and Prince Louis.

Other Royals in Attendance
Also attending the festive lunch were King Charles’ youngest brother, Prince Edward, and his wife Sophie, Duchess of Edinburgh. The couple later arrived with their daughter, Lady Amelia Windsor.
According to The Mail and other outlets, at around the same time the royal family gathered in London, Andrew was photographed several miles away riding his horse through Windsor Park, undeterred by heavy rain.