"Ardern has earned a reputation as a frugal leader who recently froze MPs salaries for a year and makes her ministers carpool to events", it said.
Ms Ardern planted a kiss on baby Neve during the inaugural high-level Nelson Mandela Peace summit, a day before leaders address the UN General Assembly.
The pictures will be printed in many newspapers around the world.
Little Neve Te Aroha made her United Nations debut on Monday when her mother spoke at a peace summit in the General Assembly.
At the United Nations this week, New Zealand Prime Minister Jacinda Ardern has to contend with some daunting challenges - her debut before world leaders and the sleep schedule of her three-month-old baby. "There's not many places you can do that", Ardern told a Social Good Summit in NY yesterday. While she spoke, Ardern's partner Clarke Gayford held the three-month-old baby on his lap.
Overnight, the Prime Minister also appeared on the NBC's Today breakfast show.
But agree with him or not, few of the 130-odd world leaders in town for the United Nations General Assembly turned down their invitations to the reception on Monday evening local time (Tuesday NZ Time).
"Prime Minister Ardern is showing that no one is better qualified to represent her county than a working mother", he said. Yes we need a robust democracy but you can be strong and you can be kind.
"We have an agenda that is focused on addressing issues around drug use".
Given the programme is watched by millions, Ardern will have won over many fans in the US.
But Ardern's office confirmed the preferred method of travel was on foot as they were staying within walking distance of the UN.
Ms Ardern returned to work in early August after spending "the fastest six weeks" of her life on maternity leave.
NAIJ.com earlier reported that President Muhammadu Buhari addressed the UN General Assembly in NY this Tuesday, September 25. Jacinda had already said that they'd be coming to the U.S. as a family and by god she's going to go through with it and nobody can stop her, thanks.
Dad on duty: Clarke Gayford, partner of New Zealand Prime Minister Jacinda Ardern, carries their daughter Neve.
Global fascination with the family is being helpfully assisted by Ardern's partner Clarke Gayford, who has been dutifully tweeting updates on the week.
"Because everyone on twitter's [sic] been asking to see Neve's United Nations id, staff here whipped one up", Gayford wrote in a tweet.
Her use of an official plane and a round trip back to New Zealand during the recent summit of the Pacific Islands Forum sparked criticism from opposition MPs over the cost to taxpayers.
Jacinda Ardern is the first female national head to bring her baby with her to the UN. To her followers, it's hope.
She had already announced that they would travel as a family to the United Nations in NY, where she will address the General Assembly. But Ardern seems to be handling it all like the legend she is.
Prime Minister Ardern is also siding against Mr Trump on the issue of Iran after he re-imposed sanctions and accused Iranian President Rouhani of breaching the anti-nuclear deal. "It's really no big deal guys".