1 of 10
2 of 10
HE MARKS THREE GENERATIONS OF LIVING HEIRS
The birth of George Alexander Louis, the Prince of Cambridge – who made his public debut Tuesday outside London's St. Mary’s Hospital – marks the first time the British royals have had three generations of heirs alive at the same time since 1894. George becomes third in line, after his grandfather, Prince Charles, and father, Prince William, to succeed 87-year-old Queen Elizabeth (who also makes history as the first queen since Queen Victoria to meet her great-grandchild).
3 of 10
HE SET THE WORLD A-TWITTER
The Prince of Cambridge had the Internet buzzing, as it's the first British royal birth to be announced by palace officials via Twitter. At its peak, there were more than 25,000 related tweets per minute. Never missing a moment, British newspaper websites and international TV crews ran live coverage outside St. Mary's Hospital's private Lindo Wing, where Kate gave birth.
4 of 10
HE'S A REAL HEAVYWEIGHT
Whoa, baby! Weighing 8lbs., 6oz., at birth, Prince George is the heaviest royal baby in 100 years, say royal historians.
5 of 10
HIS DAD NEVER LEFT MOM'S SIDE
Like Prince William, Prince Charles, Prince Albert and King Edward VII were all present for their children's births, but Will may be the first to have spent the night at the hospital with his wife and the royal baby. Will also may set a precedent as the first royal to take official paternity leave (he's granted two weeks from his job as a pilot in the Royal Air Force).
6 of 10
HE'LL HAVE A 'NORMAL' UPBRINGING
Despite his silver spoon, the royal baby is so far the most "normal" future monarch in history – the hands-on Duke and Duchess reportedly do not plan to hire a full-time nanny, and there's no doubt he'll spend lots of time with his "commoner" relatives – Aunt Pippa, Uncle James, Grandma Carole and Grandpa Michael – in Bucklebury.
7 of 10
HE GOT A LIFT HOME FROM DAD
Unlike Prince Charles and Princess Diana, who were chauffeured from the hospital after the births of their sons, William hopped into the front seat (like any nervous new father!) to drive Kate and baby to their home at Kensington Palace.
8 of 10
HE'LL RULE THE NEW CENTURY
Baby George could be a leader for the next era: If he lives to the age of 87 (the same age as his great-grandmother, Queen Elizabeth), he will become the first monarch of the 22nd century.
9 of 10
HIS OFFICIAL PORTRAIT WAS SHOT BY GRANDPA
Just a few days shy of Prince George turning one month old, Prince William and Kate released two informal family photos (dogs included!) taken at the Middleton's home in Bucklebury. Breaking from the royal tradition of an official portrait shot by a professional photographer on palace grounds, the casual garden pictures were snapped by Kate's father, Michael. A palace source tells PEOPLE Will and Kate thought having a family member take the photos was the "best way to capture the couple in a relaxed manner" – an indication of how the modern couple plans to handle baby's future milestones.
10 of 10
HIS CHRISTENING HAS BEEN MINTED
Prince George's Oct. 23 christening, an intimate private ceremony at the Chapel Royal in St. James's Palace, was cause for celebration. Breaking with tradition, Prince William and Duchess Catherine chose seven godparents for their 3-month-old son, six of whom are non-royals (William's cousin Zara Tindall is the only royal in the group) – in contrast, William's six godparents include titled nobility such as former King Constantine II of Greece and Princess Alexandra. Most notably, Prince George's christening is also the first for which the Royal Mint has issued a commemorative coin. Ranging in price from 13 pounds (about $21) for the basic nickel design to 50,000 pounds ($80,000!) for an intricate one kilogram of gold, such a memento only comes about for the most important tributes. Its inscription reads, "To celebrate the Christening of Prince George of Cambridge 2013," with a design of two cherubs playing the harp.