Article continues below advertisementOK! can reveal Meghan Markle is facing renewed scrutiny over claims she is breaking a promise made to Queen Elizabeth II as she prepares for a high-profile trip to Australia with Prince Harry.Meghan, 44, the Duchess of Sussex, and Harry, 41, are due to travel to Sydney and Melbourne in mid-April for what has been described as a series of philanthropic engagements - their first visit to Australia in more than seven years.