The couple also attended the opening ceremony of the Invictus Games.
She did join Prince Harry for the last engagement of the day on Monday, 22 October.
The former actress is now going through the process of obtaining United Kingdom citizenship but would retain U.S. citizenship through becoming a British citizen, which can take a number of years to complete.
She and Harry were met at Suva's Nausori Airport by Melanie Hopkins, the High Commissioner and chief of protocol, Jonetani Tagivetaua.
However, Robin Nair, who was Fiji's foreign affairs permanent secetary before he resigned previous year has expressed concern that Prime Minster Frank Bainimarama will take "full advantage" of the royal couple's visit.
Jamie Lee Curtis Revives ‘Halloween’ With a Record Debut
Rounding out the top five is Universal's " First Man ", which notched $8.5 million this weekend for a total of $30 million. It's also the second-highest start for an R-rated horror movie, behind only the killer clown movie It ($123.4 million).
Later today, Harry and Meghan will attend an official welcome ceremony at Albert Park known as the Veirqaraqaravi Vakavanua, embodying Fijian cultural identity and heritage, echoing an event attended by the Queen and the Duke of Edinburgh during their Commonwealth tour in 1953.
Meghan, 37, cradled her growing baby bump while wearing a Reformation maxi dress, brown leather lace-up sandals and sunglasses.
The Duke and Duchess are aware of the current epidemic of Zika-infested mosquitos in the areas they are set to visit and how it can affect pregnant women and have reassured the royal family and the public that they have taken on the recommendations of doctors to avoid Meghan coming into contact with the virus.
The pair will spend a total of three days in Fiji, and a day in Tonga.