Jacinda Ardern has met United States President Donald Trump and Canadian Prime Minister Justin Trudeau at Apec.
The leaders were attending a dinner in the coastal resort of Da Nang, Vietnam, which is hosting Apec.
In a photo shared to Twitter - with the caption "#NAFTA Pijama [sic] Party" - the New Zealand Prime Minister can be seen meeting the pair.
In another photo, the leaders - dressed in their so-called "silly shirts" - can be seen getting ready to pose for the traditional family photo before the dinner.