Kensington Palace has released three adorable new pictures to mark the future king's Prince George of Cambridge sixth birthday on July 22, 2018, was taken by his mother Catherine, Duchess of Cambridge

Prince George of Cambridge picture taken during a family vacation at an undisclosed location. He is wearing a pair of blue and white striped swimming nautical shorts, a green polo shirt from High Street store H&M as he poses for the camera.

The future king Prince George of Cambridge laughs as he lies playfully in the garden of their home at Kensington Palace - the young Prince in the white England football home shirt.

The birthday boy Prince George of Cambridge shows off his cheeky smile and missing baby teeth in the photographs -  wearing an English football shirt.

Prince George of Cambridge and cousin Mia Tindall pictured at the Burnham Horse Trials in April 2019

Prince George and his sister Princess Charlotte, four, playing together as they attended the King Power Royal Charity Polo Day at Billingbear Polo Club on July 10, 2019, in Wokingham

Cheeky page boy! The birthday boy Prince George couldn't contain his excitement during Princess Eugenie's wedding in Windsor on 12 October 2018 - and was pictured with his hand over his mouth in shock, from left his sister Princess Charlotte of Cambridge and cousin Savannah Phillips

Pictured, Prince George on his first birthday with his mother Catherine, Duchess of Cambridge who makes sure to cover her son's ears with noise-canceling headphones to protect his hearing when out in a particularly loud environment.

A royal wave! Prince George has grown to be more serious in front of the press but in 2016, aged three, he graced the media with a cute wave. Pictured, leaving from Victoria Harbour to board a sea-plane on the final day of their Royal Tour of Canada on October 1, 2016

Prince George of Cambridge put on a serious display when he attended the wedding of cousin Princess Eugenie to Jack Brooksbank at St George's Chapel on October 12, 2018, in Windsor

During the Canada Tour of 2016, Prince George, then three, enjoyed some downtime and was pictured smiling as he played with some bubbles at a children's tea party at Government House in Victoria on September 29, 2016

All smiles! Prince George also showed off his gap-toothed grin in his official portrait for his fifth birthday in July 2018

Prince George and sister Princess Charlotte was seen hanging out in the boot of the car during the King Power Royal Charity Polo Day at the Billingbear Polo Club in Wokingham on July 10, 2019

Prince George was engaged in a game of football, while his younger brother Prince Louis run around in the background during the King Power Royal Charity Polo Day at the Billingbear Polo Club in Wokingham on July 10, 2019

Prince George of Cambridge, aged two, photographed taking a tumble at the Gigaset Charity Polo Match at the Beaufort Polo Club on June 14, 2015

The young Prince George of Cambridge was pictured playing tricks behind cousin Isla Phillips at St George Chapel, in Windsor, on the day of Princess Eugenie's wedding on October 12, 2018