Prince William and Princess Kate are worried Prince Harry and Meghan Markle are growing closer to two members of the Royal Family , according to an expert. The Duke and Duchess of Sussex have become estranged from senior members of The Firm after making a number of scathing comments about their lives behind Palace doors. Royal author Tom Quinn, however, suggested they're now reconnecting with Princess Beatrice and Princess Eugenie .

Quinn said this has caused unease among the Prince and Princess of Wales . He told The Mirror : "For William and Kate an alliance between Harry and Meghan and Beatrice and Eugenie is a huge worry. For all the latest on news, politics, sports, and showbiz from the USA, go to The Mirror US .

READ MORE: Prince William's blunt four-word comment after Meghan Markle and Harry's big announcement Prince Harry has always been close with Princess Beatrice and Princess Eugenie ( Image: UK Press via Getty Images) "They sense that Beatrice and Eugenie feel that, as virtual outcasts themselves, they have far more in common with Harry and Megan than with any other part of the family. The situation is made worse by the fact that the senior royals' main asset – Kate herself - is effectively out of action while she continues her treatment for cancer." The Princess of Wales announced back in March she is being treated for cancer and has since stepped down from public duties.

Tom continued: "The worry for the senior royals is that after their tour of Nigeria, Harry.