Princess Charlotte shows off her silly side at Prince William's polo match

The royal family had quite a busy weekend!

After attending the formal Trooping the Colour ceremony to celebrate Queen Elizabeth's 92nd birthday, Duchess Kate and her two eldest children, Prince George and Princess Charlotte, went to support Prince William as he played in the Maserati Royal Charity Polo Trophy on Sunday. 

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The royal family at the Maserati Royal Charity Polo Trophy
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The royal family at the Maserati Royal Charity Polo Trophy

Catherine, Duchess of Cambridge, Prince George of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/Samir Hussein/WireImage)

Princess Charlotte of Cambridge, Catherine, Duchess of Cambridge and Prince George of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Karwai Tang/WireImage)

Prince George of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England. (Photo by Max Mumby/Indigo/Getty Images)

Prince George of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Princess Charlotte of Cambridge at the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Karwai Tang/WireImage)

GLOUCESTER, ENGLAND - JUNE 10: Princess Charlotte of Cambridge playing during the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/WireImage)

Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Prince George of Cambridge attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Isla Phillips, Savannah Phillips, Prince George of Cambridge and Catherine, Duchess of Cambridge attend the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Prince George of Cambridge attends the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Karwai Tang/WireImage)

Princess Charlotte of Cambridge attends the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Karwai Tang/WireImage)

Prince George of Cambridge plays with a Slinky toy as he attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England. (Photo by Max Mumby/Indigo/Getty Images)

Catherine, Duchess of Cambridge with Princess Charlotte of Cambridge and Prince George of Cambridge during the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Mark Cuthbert/UK Press via Getty Images)

Prince George of Cambridge, Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Prince George of Cambridge and Princess Charlotte of Cambridge run together during the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/WireImage)

Princess Charlotte of Cambridge attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Catherine, Duchess of Cambridge, Prince George of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/Samir Hussein/WireImage)

Princess Charlotte of Cambridge and Prince George of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Karwai Tang/WireImage)

Catherine, Duchess of Cambridge, Prince George of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/WireImage)

Catherine, Duchess of Cambridge looks on as Prince George of Cambridge holds a toy gun the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/WireImage)

Prince George of Cambridge and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018 in Gloucester, England.

(Photo by Samir Hussein/WireImage)

 Prince George of Cambridge and Catherine, Duchess of Cambridge attend the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

Prince George of Cambridge attends the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club on June 10, 2018 in Gloucester, England.

(Photo by Max Mumby/Indigo/Getty Images)

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The more casual event was a good opportunity for the kids to just be kids. Princess Charlotte, 3 years old, especially let loose as she ran around the field with her big brother, kicking off her shoes and putting her best somersaults on display. She even donned a pair of pink sunglasses that matched her sundress and joined Prince George, 4 years old, in playing with a rainbow Slinky.

Duchess Kate, wearing a chic dress from Zara, seemed to be beaming non-stop as she laughed and watched her children play. Scroll through the gallery above to see the family's best moments from the Polo match!

See all of the royal children at this year's Trooping of the Colour

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Royal children at the 2018 Trooping the Colour
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Royal children at the 2018 Trooping the Colour
LONDON, ENGLAND - JUNE 09: Meghan, Duchess of Sussex, Prince Charles, Prince of Wales, Prince Harry, Duke of Sussex, Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, Princess Charlotte of Cambridge, Savannah Phillips, Prince George of Cambridge and Isla Phillips watch the flypast on the balcony of Buckingham Palace during Trooping The Colour on June 9, 2018 in London, England. The annual ceremony involving over 1400 guardsmen and cavalry, is believed to have first been performed during the reign of King Charles II. The parade marks the official birthday of the Sovereign, even though the Queen's actual birthday is on April 21st. (Photo by Chris Jackson/Getty Images)
(left to right) The Duke and Duchess of Cambridge with Princess Charlotte (bottom right) and Prince George, on the balcony of Buckingham Palace, in central London, following the Trooping the Colour ceremony at Horse Guards Parade as the Queen celebrates her official birthday. (Photo by Yui Mok/PA Images via Getty Images)
(left to right) The Princess Royal, Princess Beatrice, Lady Louis Windsor, Duke of York, Duchess of Cornwall, Queen Elizabeth II, Duchess of Sussex, Prince of Wales, Duke and Duchess of Sussex, the Duke and Duchess of Cambridge with Princess Charlotte, Savannah Phillips and Prince George, on the balcony of Buckingham Palace, in central London, following the Trooping the Colour ceremony at Horse Guards Parade as the Queen celebrates her official birthday. (Photo by Yui Mok/PA Images via Getty Images)
(left to right) Queen Elizabeth II, Duchess of Sussex, Prince of Wales, Duke of Sussex and the Duke and Duchess of Cambridge with Princess Charlotte, Savannah Phillips and Prince George, on the balcony of Buckingham Palace, in central London, following the Trooping the Colour ceremony at Horse Guards Parade as the Queen celebrates her official birthday. (Photo by Yui Mok/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge, Savannah Phillips and Prince George of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Prince George of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge and Savannah Phillips during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Prince George of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Prince George of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge and Savannah Phillips during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - JUNE 09: Princess Charlotte of Cambridge during Trooping The Colour 2018 on June 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
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