Carole was also on hand to help with the school run as she was pictured collecting Prince George, four, from school. People around the world were stunned at how effortlessly gorgeous, thin, and chic the Duchess of Cambridge looked just hours after giving birth to her third baby.
News of the royal birth came with a mix of tradition and modernity typical of Britain's media-savvy royal family.
The newborn boy was born at St. Mary's Hospital in London at 11 a.m. native time, Kensington Palace mentioned in an announcement.
"Her Royal Highness and her child are both doing well".
The baby is a younger brother to 4-year-old Prince George and Princess Charlotte, who turns 3 next week.
In 2013, Middleton gave birth to Prince George.
When Australian High Commissioner Alexander Downer asked William if he's considered the name Alexander for the little one, William replied, "Well, it's amusing you should say that".
The new baby prince's great-grandmother the Queen, 92, is still at Windsor Castle for Easter Court with the Duke of Edinburgh, who is recuperating following a hip operation.
Prince William became a dad-of-three on Monday and was already back out at official engagements for the royal family today, revealing how he and Kate are adjusting to being parents to a newborn again.
Eugenie is due to Wednesday Jack Brooksbank after seven years together on October 12 in St George's Chapel at Windsor Castle - the same location where Prince Harry and Meghan Markle will tie the knot on May 19. Before the rules were changed in 2012, male heirs took precedence.
"She's been popping in and out of Kensington Palace, helping with George and Charlotte".
One Twitter user remarked: "Kate Middleton is a BEAST..." I thought she gave birth maybe two days before!