The Labor leader will become New Zealand's third female prime minister and the youngest woman to lead the country in 150 years.
A standing ovation greeted Jacinda Ardern as she welcomed her MPs and soon-to-be Ministers to her first caucus as Prime Minister-elect. "I won't let disappointing & false claims stand in the way of that relationship".
Ardern, who only assumed office as the Labour leader on August 1, said the Green Party is still undertaking internal approval process before making a decision whether to join the Labour-led government.
"We will work hard to ensure New Zealand is once again a world leader, a country we can all be proud of".
Following this afternoon's meeting, Ms Ardern will reveal her new Cabinet.
But Ms Ardern has denied her government is a "coalition of the losers" and says she is hopeful it will see out its term.
"The fact is Ms Ardern gave an explanation a couple of months ago about the behaviour of a New Zealand member of the Labour Party and she said at the time that his conduct is wrong, it was unacceptable and it should never have happened and that he shouldn't have become involved".
Ardern said Winston Peters had been offered the deputy prime ministership, but had not said if he would accept the offer.
Prime Minister-elect Jacinda Ardern swept to power after negotiations with the New Zealand First and Green parties were secured on Thursday.
British Prime Minister Theresa May had also been in touch to offer her congratulations and Ardern was scheduled to speak to her on Friday night where she thought they would discuss issues of trade and security.
"It was during Mr Peters opening remarks and comments that I really got a sense of that shared common ground, particularly that comment about all New Zealanders benefitting from economic prosperity - that was the moment I thought "he's going with us", Ardern told RNZ. "My team and I look forward to building and strengthening the connection between our two nations - and I trust the Government shares this commitment".