The official Twitter handle of Kensington Palace made the announcement on Monday that the couple is expecting a baby in the Spring of 2019.
"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," read the tweet.
The confirmation comes just days after Markle sparked pregnancy rumours with her choice of outfit for Princess Eugenie's wedding. The 'Suits' alum wore a loose-fitting, long navy blue coat, which was in contrast to her sleek dresses she has been pictured wearing at a number of events recently.
Earlier today, the couple arrived in Australia for their first official royal tour since getting married in May.
Prince Harry, sixth in line to the British throne, and Markle, got married on May 19 at Windsor Castle's St. George's Chapel.