Popsugar Celebrity The Royals Prince William and Kate Middleton at State Banquet June 2019 The Duke and Duchess of Cambridge Make a Dazzling Appearance at the Queen's State Banquet 4 June 2019 by Monica Sisavat Solís First Published: 3 June 2019 Image Source: Getty / WPA Pool Kate Middleton was an absolute vision in white when she stepped out for the State Banquet with Prince William at Buckingham Palace on Monday. The Duchess of Cambridge stunned in an Alexander McQueen gown and the Lover's Knot tiara, while William looked debonair in a black tux. The black-tie affair was hosted by Queen Elizabeth II in honour of US President Donald Trump's UK visit, and also brought out Prince Charles, Camilla, Duchess of Cornwall, US Secretary of the Treasury Steven Mnuchin, Prime Minister Theresa May, and Donald's family, including his wife Melania, daughters Ivanka and Tiffany, and sons Donald Jr. and Eric. During the event, the queen delivered a speech, highlighting the importance of the UK's relationship with the US. "Tonight we celebrate an alliance that has helped to ensure the safety and prosperity of both our peoples for decades, and which I believe will endure for many years to come," Elizabeth said. She then raised a toast to "the continued friendship between our two nations, and to the health, prosperity and happiness of the people of the United States." Neither Prince Harry nor Meghan Markle were present at the banquet, as they recently welcomed their son Archie and the Duchess of Sussex is currently on maternity leave. However, Harry did have a meeting with the Trump family earlier in the day. See more of William and Kate's glamorous night out ahead! Related: 23 Times Will and Kate Showed PDA — and Why They Don't Do It That Often Image Source: Getty / VICTORIA JONES 1 / 13 Image Source: Getty / Max Mumby/Indigo 2 / 13 Image Source: Getty / Max Mumby/Indigo 3 / 13 Image Source: Getty / WPA Pool 4 / 13 Image Source: Getty / VICTORIA JONES 5 / 13 Image Source: Getty / VICTORIA JONES 6 / 13 Image Source: Getty / VICTORIA JONES 7 / 13 Image Source: Getty / VICTORIA JONES 8 / 13 Image Source: Getty / VICTORIA JONES 9 / 13 Image Source: Getty / WPA Pool 10 / 13 Image Source: Getty / VICTORIA JONES 11 / 13 Image Source: Getty / WPA Pool 12 / 13 Image Source: Getty / WPA Pool 13 / 13 The RoyalsThe British RoyalsDonald TrumpPrince WilliamQueen Elizabeth IIKate Middleton