Meghan put on the beautiful dress for the evening's event, after landing in Tonga with a red self-portrait dress.
The Duke and the Duchess of Sussex were received at the airport of Fua & # 39; amotu by Princess Angelika Latufuipeka and the royal couple received a warm welcome to the country.
The school children who had been given the day off lined the streets waving flags and cheering the Duke and Duchess as they traveled from the airport to the capital of Nuku & allu.
Before Harry and Meghan left for Tonga, the Fijian President, Major General Jioji Konrote, thanked the royal couple for their visit.
He said: "Thank you for coming to Fiji and honoring us with your very welcome but very short visit.
"It's good to know that you promise to come back, that Almighty God be with you now and in the future."
And the Duke opened his speech with the traditional Fijian greeting "Bula."
Harry said: "Thanks to the people of Fiji for the warm welcome we received during our visit.
"The Duchess and I are leaving with special memories of your beautiful country and we hope to return in the future."
Follow below to get live updates on everything that happens on day ten of the Royal tour (every time on BST):
Meghan and Harry attend a dinner in Tonga
Meghan was surprised with a red dress, like a nod to the flag of Tonga.
7.10am update: Meghan stuns in white dress
Meghan has shown a hint of her baby blow with a full-length white dress for reception and dinner.
06.14am update: Meghan and Harry meet the king and queen of Tonga
The royal couple has arrived at the Consular House in the capital of Tonga, Nuku & alofa, for a private audience with King Tupou VI and Queen Nanasipau & # 39; u.
Meghan and Harry will attend a reception and dinner with traditional entertainment.
Update at 4:00 a.m.: Meghan suffers the false fashion
Meghan dazzled with an impressive self-portrait red dress when she landed in Tonga on the tenth day of her Royal Tour with Prince Harry, but the world did not take long to realize that she actually suffered an unfortunate and clumsy misstep.
The Duchess of Sussex arrived in Tonga with her husband this morning to attend several royal engagements, beginning with an official welcome ceremony at the international airport of Fua'amotu.
When she stepped on the red carpet, it seemed that Meghan had a slight mishap in regards to her new bright red dress.
The dress label was still attached and photographed hanging from the back of her dress.
Update at 03.51 am: Meghan Markle and Prince Harry arrive in Tonga!
Meghan and Prince Harry have just arrived in Tonga and will receive an official welcome at the airport.
The duchess has put on her red self-portrait dress, which highlights her baby's blow.
Meghan showed a hint of her baby bulge in the red dress
But the tag was still attached to the dress.
The royal couple received a warm welcome in Tonga.
Update of 2.24am: It's a wrap! Prince Harry and Meghan go to Tonga
Prince Harry thanked all Fijians for a warm welcome to him and Meghan before revealing the status of Sergeant Taliasi Labalaba.
The couple is now heading to Tonga for another official welcome.
They are expected to arrive there in a couple of hours.
01.45am update: & # 39; The reals will never be forgotten here as a family & # 39;
Veteran British Army soldier Romanu Naceva said that "the Royals will never be forgotten here as a family" after meeting the Duke and Duchess of Sussex.
Mr. Naceva, 78, said he has seen the Royals several times, but they met with Meghan and Harry on Tuesday, it was the time he had been with them.
He said: "We shook hands, it was great!"
"It was nice to see His Royal Highness come with a smile like that.
"I do not think the Royals are forgotten here as a family."
Meghan and Harry have left Fiji
Harry tried Kava again before leaving Fiji
01.19am update: Prince Harry drinks more Kava
Prince Harry has tasted Kava for the third time, a traditional Fijian drink.
According to reports, the drink could cause mild hallucinations and euphoria.
The pregnant duchess of Sussex, as expected, passed up the opportunity to drink it.
The ban came into effect on January 13, 2003 due to fears of liver damage when taking kava supplements.
According to WebMD, there are "big safety concerns around kava", since "many cases of liver damage and even some deaths" are related to the consumption of the substance.
But in one study, the researchers reported that "there is no evidence of serious liver damage in populations using kava in Pacific Island societies or in indigenous Australians who have used aqueous extracts of kava."
Update of 12.43: Duchess looks impressive in green
Meghan dazzled in a tight dress from Jason Wu when he got out of the car at the Nadi airport.
She matched the suit with gold earrings.
Prince Harry is wearing a gray suit.
Meghan and Harry will soon be flying to Tonga, where they will receive an official welcome at the airport.
12.25 am update: Meghan and Harry have arrived at Nadi airport
The Duke and Duchess of Sussex have just arrived at the Nadi airport.
Update at 12.15: Where did the couple stay last night?
When Meghan and Harry arrive at Nadi Airport today, they would have spent the night at a 5-star island resort in North Lau.
The three private villas are made with natural materials and it is possible to dine and do yoga under the star on the beach.
Update of 12.06 am: Harry and Meghan expected to arrive in less than an hour
The Duke and Duchess of Sussex will shortly arrive at Nadi airport.
Hundreds of locals are waiting for the local duo from this early morning.
The royal couple will have a formal welcome before discovering the statue of a British-fixed SAS soldier.
Additional report by Martina Bet.