Queen Elizabeth II talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Queen Elizabeth II talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)Image: Getty Images

The Diplomatic Reception at Buckingham Palace means one thing...The tiaras are out

1000 members of the diplomatic corps descended on Buckingham Palace last night for a night that always promises some brilliant photo moments.

Prince William and Kate, Prince Charles and Camilla, and Queen Elizabeth herself were all present and donned some of their finest threads for the occasion.

The Duchess of Cambridge was kitted out in a velvet gown by Alexander McQueen, while Queen Elizabeth chose to wear an Angela Kelly state gown that had people looking on in awe.

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Here's our favorite photos from the event

Catherine, Duchess of Cambridge talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Catherine, Duchess of Cambridge talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Catherine, Duchess of Cambridge, Prince William, and the Duchess of Cornwall at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Catherine, Duchess of Cambridge, Prince William, and the Duchess of Cornwall at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

The Duchess of Cornwall at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

The Duchess of Cornwall at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

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Queen Elizabeth II at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Queen Elizabeth II at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

 Queen Elizabeth II talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Queen Elizabeth II talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Catherine, Duchess of Cambridge talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

Catherine, Duchess of Cambridge talks to guests at an evening reception for members of the Diplomatic Corps at Buckingham Palace on December 11, 2019 in London, England.(Photo by Victoria Jones - WPA Pool/Getty Images)

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