The Duchess of Cambridge has been pictured wrapping presents as she visited a children's centre in Harlem earlier today.
The Duchess also helped the youngsters, aged three and four, make Christmas decorations.
Later Kate attended a luncheon where she met British entrepreneurs working in New York.
The Duchess chats to Peter Cashmore, CEO & Founder of Mashable, one of many British entrepreneurs working in New York http://t.co/3cBnUap9Do
A group of New York children thought the Duchess of Cambridge was Princess Elsa from the hit movie Frozen when she visited them.
The youngsters, who welcomed Kate at a Harlem based mental health centre, cried "princess" as she entered.
Rose Ann Harris, director of early childhood services at the Northside Centre for Child Development said: "The children thought she was the Princess from Frozen.
"When they heard she was coming they thought it was Elsa - we said a Princess and they got a Princess.
"The visit meant everything to the children, they were thrilled and it acknowledges all the hard work of the staff."
The Duchess of Cambridge caused a media frenzy across the pond when she followed in the footsteps of Princess Diana by visiting Harlem during her New York trip.
Meanwhile in Washington, her husband Prince William delivered a speech to the World Bank against illegal wildlife poaching.
His talk was delayed slightly due to a security scare in a car parked nearby but resumed promptly and according to plan.
But however important his message was, it will be Kate making the headlines on this trip.
ITV's Royal Correspondent Tim Ewart reports:
A British-backed international taskforce has been set up to help tackle animal poaching.
In a speech on the issue, Prince William said the taskforce will work with the transport industry to see how it can play its part in shutting down wildlife trafficking routes.
He added some members of the private sector were already leading the way by banning sharking fins on planes, whether they were obtained legally or not.
The prince said the taskforce would also build on the work done by INTERPOL, who recently issued a list of nine fugitives most wanted for environmental crime.
The black coat worn by the Duchess of Cambridge during a visit to a children's centre in New York is expected to sell out by tomorrow.
Priced at £680, the monochrome ensemble by luxury British cashmere brand Goat, has sold out on at least one retailer's website.
A spokesman for Goat said: "We expect the coat will be sold out by tomorrow."
The brand has a celebrity following and counts the likes of Gwyneth Paltrow, Sienna Miller and Victoria Beckham as customers.
On the Goat website the coat, called the Washington, is described as a "a real stand out wardrobe hero".
One Twitter user @Royal_Fashions wrote: "I love that Kate wore the "Washington" coat while her husband is actually in Washington. #DC #NotTheState"
Prince William gave a speech urging the global community to act on the issue of illegal wildlife trading during a royal trip to the US.
The Duke of Cambridge addressed the World Bank in Washington ahead of the UN's Anti-Corruption Day on Tuesday.
He said in his view one of the most insidious forms of corruption in the world today is poaching, adding: "I was inspired by my grandfather and father, who have championed international conversation for over 50 years."
The Duchess of Cambridge was greeted warmly as she visited a children's centre in Harlem as part of the royal couple's trip to New York.
Kate was accompanied by The First Lady of New York, the Mayor's wife, Chirlane McCray.
As she entered the Northside Center she softly said hello to staff as she shook their hands.
During the visit she will learn about how the organisation fosters the healthy development of children and families by providing high-quality mental health and educational services.
Prince William and Obama have been chatting about being dads as they met at the Oval Office during the Royal visit of America.
The Duke of Cambridge told the US President that he got so caught up in the excitement when George was born that he "forgot" to ask whether he was a boy or girl.
....what a surprise.
And last time, I remember when George was born, I forgot to work out whether it was a boy or a girl. The excitement of the event and everything else was just chaos. You are suddenly... well actually it's a boy. So now, it's good
It's going to be interesting next year. A busy year next year.
Prince William said the trade is now the fourth most lucrative in the world after drugs, arms and human trafficking.Read the full story ›
Last night's excitement at the arrival of the Duke and Duchess of Cambridge in New York continued today as excited American's hoped to catch a glimpse of the Royal couple.
ITV News' Royal Corespondent Tim Ewart reports from New York: