"Back home we love them, so I'm glad to be here as it's happening".
"My mother raised me to be a global citizen, with eyes open to sometimes harsh realities", she said.
The news came just hours after the Duke and Duchess of Sussex touched down in Sydney for their first major global tour.
Harry's father Charles is said to have forged a strong bond with Meghan, and walked her down the aisle through the Quire when her father pulled out of attending the wedding. "They didn't get to enjoy married life just as a couple for too long, but it'll be gorgeous with a child".
She sent her "warmest congratulations " to Prince Harry and the former Meghan Markle on Monday. "Wishing them all the best".
Experienced three-time parents William and Kate will be able to offer advice to Harry and Meghan on everything from sleepless nights, feeding and weaning to tantrums and choosing the right school. The couple shied away from inviting the country's politicians to focus on family and friends.
The baby is expected in the spring of 2019, added the tweet.
Princess Eugenie debuts third wedding look in a daring pink jacket
Specifically, the Queen, Prince Philip, Prince Charles, Kate Middleton , and Prince William were told in person there. Donald Trump has called Princess Eugenie a "truly handsome bride", but incorrectly said her wedding was on Saturday.
Australian Prime Minister Scott Morrison, who plans to climb with the couple to the top of the Sydney Harbor Bridge during the visit, told Parliament on Monday that he commended Harry for coming to Sydney for the Invictus Games and welcomed the couple. "Looking forward to sharing in the joy during your stay down under".
Harry and Meghan, Duke and Duchess of Sussex during their visit to Chichester.
The announcement comes as Harry and Meghan landed in Sydney to begin their 16-day tour of Australia, New Zealand and the Pacific.
Holding hands and casually dressed, the prince and the former American actress walked out an airport rear entrance and into a auto.
They will meet the local royals in both Fiji and Tonga, which are members of the Commonwealth.
The couple will mark the games' launch and closing ceremony in Sydney.
The sporting event founded by Prince Harry in 2014 gives sick and injured service personnel and veterans the opportunity to compete in sports such as wheelchair basketball and sitting volleyball.