The happy group had much to celebrate on their visit to the private resort of Sotogrande in southern Spain. Eighteen-year-old Eugenie recently received top grades of two As and a B in her A levels, while her big sister has just celebrated her 20th birthday.
Now a recognised polo destination, Sotogrande features five fields and an internationally acclaimed club. And on the agenda for the Duchess and her girls was a day spent watching the action and presenting prizes at a polo final.
Joining them was Beatrice's American boyfriend Dave Clark, who works for the Virgin Group.