Harry and Meghan announced the news they were to become parents upon their arrival in Australia, where they will be for the next two weeks as part of their first official international tour.
"Their Royal Highnesses The Duke and Duchess of Sussex are very pleased to announce that The Duchess of Sussex is expecting a baby in the Spring of 2019," the official statement read.
"Their Royal Highnesses have appreciated all of the support they have received from people around the world since their wedding in May and are delighted to be able to share this happy news with the public.:
News of the new royal baby spread quickly, with the couple already receiving their first gift for "baby Sussex."
Attending an event in Sydney, the parents-to-be were gifted a stuffed toy Kangaroo with a Joey in its pouch and a tiny pair of Ugg boots from the Australian Governor Sir Peter Cosgrove and his wife Lynn, Lady Cosgrove.
The Duke and Duchess were clearly delighted by the very Aussie present.
"That's so cute, our first baby gift," Meghan gushed after being handed the stuffed kangaroo while Harry leant forward to examine the Joey.
"And this is your second," the Governor-General continued, as his wife handed the prince a pair of tiny Ugg boots.
"Very Australian Ugg boots," said Lady Cosgrove.
"These are awesome," proud expectant father Harry replied.
After the news was announced, it was revealed the Duke and Duchess of Sussex’s baby will not be a prince nor a princess unless the Queen steps in.
King George V – Harry’s great great grandfather – limited titles within the royal family in 1917.
This means Harry and Meghan’s first born, as a great-grandchild of the sovereign, is too far down the line of succession to be an HRH.
George V declared that: “the grandchildren of the sons of any such Sovereign in the direct male line (save only the eldest living son of the eldest son of the Prince of Wales) shall have and enjoy in all occasions the style and title enjoyed by the children of Dukes of these Our Realms.”
The eldest son and heir apparent of a duke can use one of his father’s lesser grade peerage titles by courtesy, according to Debrett’s.
So a first son of Harry’s would become Earl of Dumbarton – one of the subsidiary titles Harry received from the Queen on the morning of his wedding.