How many movies have Anne, Princess Royal and Princess Eugenie acted in together?

They have worked on 3 movies together! Their first movie together was The Royal Wedding: HRH Prince William & Catherine Middleton (2011) while their highest rated movie together was The Coronation of TM King Charles III and Queen Camilla (2023). They have not worked together since The Coronation of TM King Charles III and Queen Camilla (2023).