The future king is likely to spend the weekend celebrating his big day with his parents and siblings Princess Charlotte and Prince Louis.
The photograph was taken after George's baby brother Prince Louis' christening earlier this month, and sees the third in line to the throne smiling broadly.
At the annual Trooping the Colour parade on June 9, Prince George and his cousin Savannah Phillips watched from the Buckingham Palace balcony, but George's chattering prompted amusing efforts by Savannah to get him to pipe down.
A great-grandchild to the Queen, he will be the 43rd monarch since William the Conqueror obtained the crown of England if, as expected, his reign follows those of the Prince of Wales, then William.
In the photo, captured by photographer Matt Porteous, Prince George is showing off a toothy smile.
Europe Plans Bank Accounts For Iran To Ease Repatriation Of Oil Revenues
Salehi said Iran was building the factory during negotiations that led to the 2015 nuclear agreement, but it was not operational. Iran had been enriching uranium by 20 per cent before signing the deal, from which the United States has recently withdrawn.
Prince George Alexander Louis of Cambridge was born at the private maternity wing of St Mary's Hospital, Paddington, the Lindo Wing, at 4.24pm on July 22, 2013, weighing 8lbs 6oz.
Prince William has said many times, his family is quite "normal" behind closed doors. It was George's second official public engagement of his young life, during his parents' Down Under tour of Australia and New Zealand.
It was also the youngest Prince's first official royal engagement since his birth on April 23, 2018.
The little prince was very interested in the tail rotor.
His grandfather, Prince Charles, is heir to the throne and his father William comes next.