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With all the coats Kate Middleton has been wearing over the last few days in New York City, we practically forgot that she's pregnant with her second child!

On Tuesday night Prince William and Duchess Kate attended the St. Andrews 600th Anniversary dinner at the Metropolitan Museum of Art, and she showed off her royal baby bump in a navy Jenny Packham gown, which she's worn a number of times before.

The St. Andrews bash marks the end of their three-day tour of NYC and Washington D.C., and seeing as the university is where the two met, it's only fitting that they'd save the best event for last. In a letter to the guests, Prince William wrote, "For Catherine and me, it will always be a very special place and we have the warmest of memories of our time as undergraduates and the friends we made there." Awww!

The anniversary celebration supports scholarships for students from under-privileged communities and helps raise funds for the school. Other attendees included Anna Wintour, Mary-Kate Olsen and her fiance Olivier Sarkozy.

Earlier in the day Will and Kate visited the National September 11 Memorial and Museum, and in between attending the Creativity is Great reception and the St. Andrews dinner, they also made time to stop by The Door, an educational center that has teamed up with the CityKids foundation, providing support to disadvantaged youth.