Prince William and Kate Middleton are reportedly concerned about Prince Harry and Meghan Markle's growing bond with Princess Beatrice and Princess Eugenie.

This comes after Harry and Meghan's estrangement from senior royals following their criticisms of royal life.

Royal author Tom Quinn suggests that Harry and Meghan are rebuilding connections with Beatrice and Eugenie.

The two princesses are considered "virtual outcasts" within the royal family, potentially finding common ground with Harry and Meghan.

William and Kate worry about this alliance, viewing it as a potential threat.

The situation is reportedly exacerbated by Kate Middleton's ongoing cancer treatment.

The Sussexes' close relationship with Beatrice and Eugenie could further strain relations with the senior royals.

This development adds another layer of complexity to the ongoing rift within the royal family.

It remains to be seen how this new alliance will impact the dynamics of the royal family.

Royal watchers are closely observing the evolving relationships within the monarchy.