The pregnant royal and her husband Prince Harry are currently in Sydney for their royal tour of Australia.
Markle looked stunning in an all-white dress by Australian designer Karen Gee and teamed with a pair of statement heels.
Markle and Prince Harry are currently staying at Admiralty House, the official Sydney residence of the Governor-General of Australia.
The father-to-be looked dashing in a navy suit.
Kicking off their 16-day Commonwealth trip, the duo were formally welcomed to Australia by his Excellency General the Honourable Sir Peter Cosgrove and his wife, Lady Cosgrove.
Images show the two couples smiling as they stood in front of the historic building - whose backdrop is Sydney Harbour.
The royal couple arrived on Monday, using their day off to make the exciting announcement.
While their family include Prince William, Kate and the Queen are all "delighted", Harry's aunty Fergie seems to be annoyed by the timing.
The mum to Princess Eugenie posted a series of tweets in the hopes to reshuffle the attention back to her daughter's royal wedding.
Several attendees congratulated the couple on their baby news, with Meghan replying: “Thank you so much. We are very excited.”
While inside, Sir Peter presented the parents-to-be with a toy kangaroo.
Meghan gushed, “Our first baby gift!”
They were also given a pair of baby Uggs which Harry said was “awesome”.