Zara Phillips and her brother Peter have another little-seen sister who lived with them on the royal estate in Gloucestershire.
Princess Anne's family live together on her 700-acre country estate, and while she grew up that included another sister, Bristol Live reports.
The famous royals, Zara and Peter, have another sister - Stephanie Phillips.
Stephanie is not the child of Princess Anne but of her former husband Captain Mark Phillips and his second wife Hawaiian equestrian Sandy Pflueger.
The 23-year-old horse enthusiast grew up on a nearby farm on the Gatcombe Park estate following the split of her parents in 2012.
Stephanie was a flower girl at both Zara and Peter's weddings and is well involved in the family - sometimes being seen with them on social media.
Peter and Autumn Phillips' daughters Savannah and Isla, and Zara and Mike Tindall's two eldest, Mia and Lena, all live on the Gatcombe Estate - bequeathed to Captain Phillips as a wedding present by the Queen - and are very close.
Stephanie now lives in nearby Worcester and has been dating William Hosier since 2019.
Stephanie went to Dean Close School in Cheltenham, which caters for boarders and day students, before going on to the University of Worcester.
Liker her mother, who was part of the US dressage team in the 1984 Olympics and worked across the world, and her father who spent years in America training the US team, Stephanie seems to enjoy travelling.
Her father met Princess Anne at equestrian events and they married in November 1973 in a lavish ceremony at Westminster Abbey.
Peter was born four years later and Zara four years after that, but by the time their parents split in 1989 they were both thought to be involved with other people.
