Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge round up their three-day visit to the United States.

To end their activity packed trip, they made final stop last night December 9, and attended the St. Andrews 600th Anniversary Dinner at the Metropolitan Museum of Art in New York City.

For the event, Catherine wore a stunning £2,000 chiffon floor-sweeping frock, by British designer Jenny Packham. She paired the chic evening look with Jimmy Choo Cosmic heels and diamond and emerald earrings.Instead of leaving her famous brunette locks down, she swept them up into a chignon.

We however instantly recognised the beautiful creation as the one she originally debuted in October 2013 at a Kensington Palace dinner in aid of people with addictions. She then re-wore it in February this year, to the black tie gala at the National Portrait Gallery in London.

Despite being five months pregnant, Kate’s frame looked tiny in the stunning gown and her bump is barely visible.

The elegant dress is described as being made of “petrol-hued silk”, has a deep v-neckline and a wrapped front.The chiffon off-the-shoulder sleeves add a whimsical feel.

Kensington Palace dinner in aid of people with addictions	Black tie gala at the National Portrait Gallery in London

Photo Credits: Robert Sabo – Pool/Getty Images | Hellomagazine.com | Weir Photos / Splash News