The royal couple is only in America for a 48-hour trip though, and they will be busy. Prince William will also visit Washington, DC to see President Obama at the White House, and People reports that the pregnant Kate is expected to spend time visiting a child development center in Harlem with the city's first lady Chirlane McCray on Monday.
Tonight, they will head to fundraisers of their Royal Foundation.
Welcome to America, Will and Kate!
Kate is wearing a plum Marina Coat from the maternity fashion brand Seraphine in New York City. Check out the video below to hear from the woman behind Kate Middleton's maternity style.