Her personal assistant and stylist, Natasha Archer, was seen at the hospital earlier in the day, possibly having taken the duchess her going-home outfit. The official statement read: "Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs".
The royals emerged a few minutes later with their infant in a carrier and got into a waiting auto. Hundreds of people flocked to the hospital to get swept up in royal fever.
In an age of social media, the British Royal Family are using the flawless blend of modern technology and ancient customs to celebrate the arrival of Prince William and Duchess Catherine's third child - a boy! The baby will be a third child for her and husband Prince William and fifth in line to the throne.
John Loughrey, 63, from south London, who was wearing a Union Jack onesie and hat and holding a baby doll adorned with a crown, said he had been camped outside the hospital for 15 days.
"Mazal Tov! Congratulations to Their Royal Highnesses the Duke and Duchess of Cambridge on the birth of their son", Rivlin tweeted.
Here is the new line of succession to the British throne.
Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, Prince George of Cambridge and Princess Charlotte of Cambridge wave to well-wishers as they depart Victoria, Oct. 1, 2016, in Victoria, Canada.
Syrian government jets pound militants in Damascus suburb
Separately, Iraq said its forces killed 36 Daesh militants, including six leaders, in air raids this past week in Syria. The militant-held enclave is adjoined by a pocket held by other rebel groups fighting under the Free Syrian Army banner.
"I wish her well", said a Boston-area mom of four, Mary Anne Donaghey, who plans to visit London this summer.
The couple's Kensington Palace office says Kate gave birth at 11:01 a.m. (1001 GMT; 6:01 a.m. EDT) to a boy weighing eight pounds, seven ounces (3.8 kilograms). The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge.
- The new baby will be a prince or princess of Cambridge and enjoy the prefix title of his or her royal highness (HRH).
The 35-year-old father, Duke of Cambridge, was present at the birth of his boy, who weighs 3.82 kg.
Her only daughter, Princess Anne, was born at Clarence House, another royal residence. They married at Westminster Abbey in London on April 29, 2011. William's younger brother Harry, who marries United States actress Meghan Markle next month, falls to sixth on the list.
According to report today in The Mirror, taking bets on royal baby number three's name has been easy money for casinos and bookmakers in England, where betting on the outcome of political matters and events in real life (that is, beyond just sports) is legal. For one thing, Monday is St. George's Day, the feast day of the patron saint of England, so some Twitter users anxious that Prince George's little brother would steal some of his attention.
But with the Succession to the Crown Act of 2013, male royals born on or after October 28, 2011, no longer take precedence over their older sisters. Previously younger males would take precedence over older female siblings. As with her other two pregnancies, the duchess suffered from hyperemesis gravidarum, an acute form of morning sickness. Simply because she had been way too unwell to go to engagements, Officials declared her prior pregnancies.