Can you believe Prince George is already four years old?
Kate Middleton and Prince William's first child, the future heir to the British throne, celebrates his fourth birthday Saturday.
It seems like it was just yesterday that reporters swarmed a London hospital, early awaiting the announcement of his birth. George arrived on June 22, 2013 at 4:24 p.m. local time and weighed 8 lbs 6 oz. His proud parents carried him out to meet the press a day later for his first public photos.
The little prince has, as expected, grown more and more adorable over the years. Kensington Palace has occasionally released gorgeous official portraits of George, some taken by Kate. A picture of George grinning was released Friday to mark his fourth birthday.
Later this year, George will start pre-kindergarten at a private school in London. He had previously attended nursery school at Westacre Montessori School near his family's home in Anmer Hall in Norfolk, England. And adorable photo of the prince on his way to that school was released in 2016.
See more adorable pics of George over the years.
Future King
The second in line to the U.K. throne is all smiles on the balcony of Buckingham Palace following the coronation of his grandfather King Charles III.
Prince Robin Hood
George practices his archery skills in the Big Help Out event during a visit to the 3rd Upton Scouts Hut in Slough, west of London, in May 2023.
Carriage Ride
George appears with siblings Princess Charlotte and Prince Louis at the Trooping the Colour 2023 event.
Sibling Bonding
George and sister Princess Charlotte watch Carlos Alcaraz face off against Novak Djokovic in the Wimbledon 2023 men's final.
Joking With Sis
George and sister Princess Charlotte joke around at the Wimbledon 2023 men's final.
George appears at the Platinum Jubilee Pageant on June 5, 2022.
Charlotte and sister Prince George visit Cardiff Castle to meet performers and crew involved in a special concert celebrating great-grandmother Queen Elizabeth II's Platinum Jubilee in June 2022.
George joins his parents at the Guinness Six Nations rugby match (England vs. Wales) at Twickenham Stadium in London on Feb. 26, 2022.
The prince made a face while at his cousin Princess Eugenie's royal wedding to Jack Brooksbank on Oct. 12.
Prince George looked dapper at the christening of his little brother, Prince Louis.
The royal siblings appeared to have a ball at the Maserati Royal Charity Polo Trophy at the Beaufort Polo Club.
During the 2018 Trooping the Colour, Prince George's cousin Savannah Phillips covered his little mouth.
Prince George served as a Page Boy for Prince Harry and Meghan Markle's wedding.
Prince George visits his little brother Prince Louis for the first time.
For their 2017 Christmas card, Prince William and Kate Middleton shared a photo of them with Prince George and Princess Charlotte in matching blue ensembles.
The little prince arrives with his family to Berlin Tegel Airport during an official visit to Germany and Poland in mid-July 2017, just before his fourth birthday.
Prince George met former President Barack Obama in 2017.
The little prince looks a bit bored on the Buckingham Palace balcony with his parents Kate Middleton and Prince William and sister Princess Charlotte.
The prince is an adorable page boy at aunt Pippa Middleton's wedding to James Matthews.
The prince attends a children's party for military families in Canada with his family.
The prince joins parents Prince William and Kate Middleton and sister Princess Charlotte onboard a sea-plane on the final day of their Royal Tour of Canada in October 2016.
Sporting a white shirt with blue accents, Prince George is joined by his sister, Princess Charlotte, during the the historic event marking the Queen's 90th birthday.
Rocking a set of blue ear protectors, Prince George sits besides his mother in a Squirrel helicopter during a visit to the Royal International Air Tattoo in early July 2016.
The little prince sits on a rocking horse in front of his parents and President Barack Obama during the U.S. leader and wife Michelle Obama's first meeting with him, during a dinner at Kensington Palace in April 2016. The two had given him the toy for his first birthday.
The little dude shows off rosy cheeks as snowflakes fall around him and his precious family.
Prince George enjoyed his first trip to the snow with mom, dad and little sister Charlotte.
The little prince made his Buckingham Palace balcony debut at the event, which celebrated his great-grandmother Queen Elizabeth II's 89th birthday.
Prince George takes a stroll with his mom at Beaufort Polo Club.
The royal nanny makes sure George can get a good view through the window of Buckingham Palace.
Little George affectionately plants a wet one on his little sister Princess Charlotte's forehead.
Kate and William have occasionally brought George and his little sister Princess Charlotte, 2, on official royal tours all over the world, which have provided plenty of opportunities for cute photo ops. In the days leading up to his birthday, the family traveled to Poland and Germany.
A palace spokesperson told E! News that William, Kate, George and Charlotte will be celebrating the boy's birthday together as a family at their home in Norfolk.
Happy birthday, Prince George!