Prince George's face when he met Barack Obama could be the cutest thing ever

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The Duke and Duchess of Cambridge and Prince Harry hosted US President Barack Obama and First Lady Michelle Obama for dinner at Kensington Palace on Friday night.

The weather was unfortunately typically British, for which Prince William apologised, but it hardly seemed to dampen spirits.

President Barack Obama and first lady Michelle Obama
(Carolyn Kaster/AP/PA)

The president shouted "oh there you are - hello" after they stepped out of the presidential black Cadillac, flanked by secret service staff.

The Duke and Duchess of Cambridge and His Royal Highness Prince Henry of Wales
(Carolyn Kaster/AP/PA)

Kate, wearing a teal and maroon dress, shook hands with the president and his wife, who was wearing a long camel coat over a lighter camel dress, before Obama offered her the umbrella.

But the Duchess refused it, leaving the US leader to hold it over both his wife and Kate.

The Duke and Duchess of Cambridge (left) greet the the President and First Lady of the United States Barack Obama and his wife Michelle
(Chris Radburn/PA)

President Barack Obama and first lady Michelle Obama are greeted by the Duke and Duchess of Cambridge and His Royal Highness Prince Henry of Wales
(Carolyn Kaster/AP/PA)

Prince Harry greets the First Lady of the United States Michelle Obama
(Chris Radburn/PA)

The five chatted briefly, laughing together several times, before moving to pose for photos without the umbrella.

President of the United States Barack Obama (second left) puts aside his umbrella before posing for a photo with (left to right) Prince Harry, First Lady Michelle Obama and the Duke and Duchess of Cambridge
(Dominic Lipinski/PA)

As they chatted in the courtyard, William was heard to say: "You've had a long day?"

To which Mr Obama, wearing a black suit and open-necked white shirt, replied: "We've enjoyed it."

Britain's Prince Harry, left, stands with the Duke and Duchess of Cambridge, right, outside of Kensington Palace in London, with United States President Barack Obama and his wife Michelle
(Chris Radburn/PA)

Prince George, who was allowed to stay up and meet the president and First Lady for a few minutes, waited eagerly inside the door as all five headed in for dinner.

And his face when he met arguably the most powerful man in the world was ever so cute.

Prince George meeting the President of the United States Barack Obama
(Kensington Palace/Pete Souza/PA)

US President Barack Obama (right) talking with the Duke of Cambridge while the Duchess of Cambridge plays with Prince George as the First Lady Michelle Obama talks to Prince Harry
(Kensington Palace/Pete Souza/PA)

The Obamas did not get to meet Princess Charlotte, but chatted in the Drawing Room of Apartment 1A Kensington Palace before dinner.

The Duchess of Cambridge (left) with First Lady of the United States Michelle Obama
(Dominic Lipinski/PA)

The Duke of Cambridge (left) speaks with President of the United States Barack Obama
(Dominic Lipinski/PA)