He later enjoyed a trip to the top of the Empire State Building with New York City Mayor Bill de Blasio and Empire State Realty Trust CEO, president and chairman Tony Malkin.

A photo of Cleveland Cavaliers star LeBron James with his arm around Kate continued to grab headlines, but while some balked at a possible breach of etiquette protocol, the palace says no offense was taken.

\"Britains
Neilson Barnard/AP Photo
Britain's Prince William, left, and Kate, Duchess of Cambridge pose with Cleveland Cavaliers' LeBron James, right, backstage of an NBA basketball game between the Cavaliers and the Brooklyn Nets on Monday, Dec. 8, 2014, in New York.
>

\"Kate and William are both casual. They are not stuffy,\" said Murphy. \"I think they like it when people relax around them and are able to be themselves.\"

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