Queen Elizabeth II celebrated her official 94th birthday on Saturday by watching a parade and military band at the royal Windsor Castle instead of the usual Trooping the Colour ceremony in central London.
Meghan Markle's father, Thomas, pulled out of the wedding and was reported to have undergone heart surgery this week.
Meghan Markle's father, Thomas, had been due to walk his daughter down the aisle at the glittering ceremony at St George's Chapel at Windsor Castle on Saturday.
Amelia Thomas, who was among the children caught up in a deadly attack on a pop concert last year, thought it was a joke when her mother said she had been invited to Windsor Castle for the wedding of Prince Harry to his US fiancee Meghan Markle.
US President Barack Obama flew to Queen Elizabeth's castle on Friday to wish the world's oldest monarch, who had turned 90 the day before, a happy birthday.
Crowds of supporters gathered near Windsor Castle to wish Queen Elizabeth II an early happy birthday, as she marked turning 90 with the release of a photograph of four generations of Britain's royals.