LONDON -- Monday marks a very royal birthday -- Prince George is turning six!
To celebrate, the family released a new portrait of George on a family trip as well as two new snaps taken by his mom, Duchess Kate, at Kensington Palace.
Prince George, a great-grandchild of Queen Elizabeth II, is third in line to the throne. George's grandfather, Prince Charles, is first, followed by his dad, Prince William. His two younger siblings, 4-year-old Princess Charlotte and 1-year-old Prince Louis, are in line right behind him.
Though George isn't spotted in public as much as the grown-up royals, he was recently seen out with his siblings and his cousin, 6-month-old Archie. George served as a page boy at the wedding for Archie's parents, Prince Harry and Duchess Meghan, last year.
VIDEO: Royal cousins spotted out with baby Archie
The Associated Press contributed to this report.
PHOTOS: Will & Kate through the years
MORE ON THE ROYAL KIDS
Royal kids make appearance at Trooping the Colours
The British royal family tree and the line of succession
Kids of the royal wedding: Cute photos of the youngest wedding guests