After arriving at the palace, the royals assembled on the Buckingham Palace balcony to watch a fly-by by the Royal Air Force.
It hasn't been revealed if they will travel elsewhere in Australia, but there has been buzz the pair has a standing invitation to spend time at a Noosa home owned by Meghan's former Suits co-star Gabriel Macht. The event celebrates Queen Elizabeth II's official birthday.
Despite the fact that it was her debut Trooping the Colour, Meghan didn't seem fazed by the flag-bearing crowds and was guided through the day by Prince Harry who could be seen talking her through the event.
Prince Harry and Meghan Markle made their first appearance together after their honeymoon on Saturday during the Trooping the Colour ceremony at Buckingham Palace.
The newly-married Duke and Duchess of Sussex will make an official visit to several Commonwealth countries in the South Pacific and Indian Ocean this coming autumn.
Instagram princesseugenieShe shared the snap ahead of Father's Day this weekend reportedly very close to her father
Meghan looked absolutely handsome in her pastel pink dress with a matching tilted hat.
Meghan also had her hair styled in a bouncy blowout.
Prince Harry created and is the patron of the Invictus Games Foundation, which runs the tournament, and has previously attended the games in other host cities. But if Meghan would have had any jitters about what she should wear for these momentous occasions in her short royal life, Prince Harry has ensured the task did not turn too daunting.