The new Prime Minister of New Zealand stood up for herself after Donald Trump made repeated jibes about her election win.

Jacinda Ardern told Newsroom about her first in-person encounter with the President.

The two had previously spoken on the phone, just after she was elected in a shocking victory.

Ms Ardern said she met Donald Trump at the East Asia Summit gala dinner, when Donald Trump patted the person next to him on the shoulder and said "This lady caused a lot of upset in her country."

She told the website that she smiled and replied "Well, you know, only maybe 40 per cent!"