Kate, 37, views Rose Hanbury, 35, as a ‘rural rival’ while at home in Sandringham, Norfolk, and their once close friendship is said to be in tatters, according to royal insiders.
Prince William has even tried to play mediator between the two women, as he and Kate have gone on several double dates with Rose and her husband David Rocksavage, the Marquess of Cholmondeley.
Kate and her former close friend Rose Hanbury have a had a ‘terrible’ falling out according to royal sources
However, the Duchess has ignored all attempts to mend fences, and insists that Rose, the Marchioness of Cholmondeley, needs to be removed from their circle of confidantes.
Royal sources have revealed that the relationship between Kate and her former close friend is worse than anybody thought.
One source told
‘William wants to play peacemaker so the two couples can remain friends, given they live so close to each other and share many mutual friends.
‘But Kate has been clear that she doesn’t want to see them any more and wants William to phase them out, despite their social status.’
Rose and her husband David, who is 23 years her senior, live just three and a half miles away from Anmer Hall, the country home given to the Duke and Duchess by the Queen.
Rose attended the royal couple’s wedding and, together with husband David, the four have gone on several double dates (pictured)
Rose’s twin sons are playmates of Prince George and she is also a former model for the same agency that discovered Kate Moss
Friends had earlier said that they believe ex-model Rose is a rival to Kate’s rural crown, living just a few miles away
The Marquess of Cholmondeley is 23 years the Marchioness’s senior and they have three children together
Rose and David live with their two twin boys, Alexander and Oliver, and daughter Iris at Houghton Hall, which has 106 rooms.
The twins have been playmates of Prince George.
Rose and David both attended William and Kate’s wedding eight years ago, where Rose was considered by many to be the best dressed guest.
She is a former model for the same agency that discovered Kate Moss and also briefly worked as a political researcher for Michael Gove.
She first came to national attention after posing in a pink bikini with her husband Marina and Tony Blair in 2005, while he was Prime Minister.
Her husband David inherited an estimated £112million estate 27 years ago, which included Cholmondeley Castle in Cheshire
Kensington Palace has declined to comment.