The Duke and Duchess of Sussex have wished their followers a “very Happy Thanksgiving from our family to yours”.
Prince Harry and Meghan's SussexRoyal Instagram account featured a message on a navy background under the couple’s monogram.
It read: “Wishing you a very Happy Thanksgiving from our family to yours – Their Royal Highnesses The Duke and Duchess of Sussex”.
It was followed by the comment “Happy Thanksgiving!” and a maple leaf emoji.
Harry and Meghan are celebrating their first Thanksgiving with their baby son, Archie.
It is not clear whether Harry and Meghan have invited the duchess’s mother, Doria Ragland, to spend time with them in the UK or whether they have travelled to the US for the American national holiday on Thursday.
The maple leaf is the national symbol of Canada – but the emoji is also used in Thanksgiving posts to denote the season.
The Sussexes are not taking part in a major gathering of the British monarchy next Tuesday, when the Queen will lead her family in welcoming Nato leaders, including US President Donald Trump, to Buckingham Palace for a reception marking 70 years of the alliance.
The couple are on an extensive festive break, thought to be six weeks, after a tumultuous year capped by the duke making a dramatic defence of his wife and attacking sections of the press he accused of bullying her.