After a busy morning touring Sydney's Taronga Zoo, the Harbour and the Opera House, it was back to Admiralty House for Prince Harry and Meghan Markle, who changed for the occasion.
Swapping her white Karen Gee dress for a stunning forest green shirt gown by American designer, Brandon Maxwell, the Duchess mingled with guests at the Governor General Reception, before Prince Harry made a speech at the event.
The dress, which recently featured on the Spring 2019 Brandon Maxwell catwalk, retails for $2,555 (GBP £1385).
The pregnant Duchess of Sussex swapped her white shift dress for a dark green number by the US designer Brandon Maxwell as she and Prince Harry moved onto an afternoon reception hosted by the Governor-General in Sydney on day one of their royal tour. In the morning they visited the Opera House and Taronga Zoo
Meghan wore jewellery belonging to Princess Diana for her day of engagements - a pair of butterfly shaped earrings and a delicate gold bangle. Kensington Palace confirmed on Monday that Meghan, 37, is pregnant with her first child - hours after she and Prince Harry touched down in Australia at the start of their 16-day overseas tour
A hint of what's to come! The pregnant Duchess of Sussex looked enchanted by Australian singer Missy Higgins' nine week old baby Lunar, as she chatted to guests at the reception on Tuesday afternoon
The dress was recently featured on the catwalk in New York, and is not available to buy by the public at present (pictured on the Duchess of Sussex)
Keep it chic like Meghan in a pleated shirt dress by Brandon Maxwell
If you’re just catching up on day one of the Duke and Duchess of Sussex’s royal tour then you’ve already missed two outfit changes.
Meghan kicked things off in her first appearance since announcing her pregnancy wearing a white dress by Karen Gee, which she accessorised with Princess Diana's bracelet and earrings, then she looked positively glowing in this pleated khaki shirt dress by Brandon Maxwell.
It’s a brand she’s worn before (remember the bright yellow dress?), but you might be familiar with the name Brandon Maxwell thanks to the likes of Lady Gaga and Rose Huntington-Whiteley.
We love the short sleeve style and midi length of this chic dress, which is from the SS19 collection. That means it's not actually available to buy, but click (right) to take a closer look at the red version over at Moda Operandi.
Or stick to khaki hues and check out the options in our edit below.
While at the event, the couple mingled with high-profile guests at Admiralty House (pictured with Missy Higgins)
However, it is not yet available to the general public, having only recently debuted on the catwalks in September.
The Duchess of Sussex completed her afternoon outfit with her trademark messy bun.
She also continued to wear the butterfly earrings and bracelet that originally belonged to her late mother-in-law, Princess Diana.
The 37-year-old duchess met a number of high profile people, including an especially touching meet with singer Missy Higgins and her baby daughter, Luna (pictured)
Prince Harry later took to the stage to address the guests, saying: 'We genuinely couldn't think of a better place to announce the upcoming... err... baby, be it a boy or a girl'
The dress featured on the catwalks in New York in red last month (pictured)
While at the event, the 37-year-old Duchess met a number of high profile people, including an especially touching meet with singer Missy Higgins and her baby daughter, Luna.
Prince Harry later took to the stage to address the guests, saying: 'We genuinely couldn't think of a better place to announce the upcoming... err... baby, be it a boy or a girl'.
'This is my wife's first visit here, so I'm obviously very excited to show her this incredible country of yours.'
In the speech, the Prince highlighted the role of the Australian government in the Invictus Games, as well as General Sir Peter John Cosgrove and Lady Cosgrove, who have lent the young royals 'your magnificent home for the week'.
The parents-to-be later enjoyed afternoon tea, boasting both 'beer and tea... in true Aussie style'.
During the morning's engagements, Meghan plumped for an ivory dress (pictured) by Australian designer, Karen Gee, who said she was 'super excited' to get the royal endorsement
The couple enjoyed a tour of Taronga Zoo, where they met koalas among other animals (pictured), as well as visiting Sydney Opera House
The official first day of the royal tour got off to a flying start, with the couple visiting Taronga Zoo, as well as enjoying a rehearsal of Spirit 2018 by the Bangarra Dance Theatre, an internationally acclaimed Aboriginal and Torres Strait Islander modern dance company.
Departing, the couple were treated to a ride in a gondola, giving spectacular views over Sydney Harbour and allowing a glimpse of other animal enclosures, including a curious baby elephant.
During the morning's engagements, Meghan plumped for an ivory dress by Australian designer, Karen Gee, who said she was 'super excited' to get the royal endorsement.
The day's formalities wrapped up at Admiralty House, with the reception and afternoon tea.
Wednesday morning will see the couple depart to Dubbo, before they head on to Melbourne on Thursday and return to Sydney to visit Bondi Beach on Friday.