Kate Middleton reveals walking with Harry and Meghan was "one of the hardest things" she's done as a royal.

The walkabout occurred two days after Queen Elizabeth II's death as mourners gathered outside Windsor Castle.

The "Fab Four" emerged to view letters and flowers left for Her Majesty, receiving a warm welcome from the crowd.

The idea to show a unified family dynamic reportedly came from Prince William due to ongoing rumors of a feud between the two couples.

Veteran royal correspondent Robert Johnson claims the reconciliation was a struggle for Princess Kate.

Johnson's book details moments following Harry and Meghan's decision to quit royal duties and relocate to California.

Late Queen Elizabeth II was confused by Harry and Meghan's criticism of the royal family in their multi-million dollar media projects.

Charles and William allegedly decided they could not risk being alone with Harry following his interview with Oprah Winfrey.

Prince Harry is expected to attend his father's coronation, but he and Meghan will not appear on the Buckingham Palace balcony.