Fans on Twitter were quick to notice the supportive gesture.
“Aww so sweet of Prince Harry to join her in her ‘water toast',” tweeted one fan.
Another added, “Both pregnant, lol. What a supportive husband.”
In his speech, Harry said the couple were “overwhelmed by the warm Fijian welcome we received from the people of these beautiful islands this afternoon in Albert Park, and all the way from the airport! It really is a privilege to be here.”
The 34-year-old royal recalled that his grandparents, Queen Elizabeth and Prince Philip, stayed at the same place, the Grand Pacific Hotel, on multiple occasions while visiting Fiji.
“As you know, Fiji has a long tradition of welcoming royal visitors over the years and our two countries have enjoyed a close relationship and friendship. We share Commonwealth values and common goals – a love of rugby and a sense of humor! Our ties run deep.”
“Your soldiers fought with the British Armed Forces during the First and Second World Wars and continue to serve alongside our soldiers to this day, with more than 1,250 Fijians currently serving,” he continued. “I must emphasize my respect, admiration and camaraderie with the Fijian soldiers that I served with in Afghanistan. We trained together, we fought together, and most importantly, we laughed together.”