There were no awkward handshakes or sexist comments that we know of - but the Prime Minister did exchange a couple of light-hearted quips with US President Donald Trump while at Apec in Vietnam.
Interviewed by Newsroom on the flight home, she revealed that while waiting for an introduction at the East Asia Summit gala dinner, Trump "in jest patted the person next to him on the shoulder, pointed at me and said, 'This lady caused a lot of upset in her country', talking about the election".
"I said, 'Well, you know, only maybe 40 per cent', then he said it again," she told Newsroom.
"I said, 'You know', laughing, 'no-one marched when I was elected'."
The president just laughed, she said.