Kate Middleton Gives Birth to HRH: 10 Things to Know; Royal Baby Name as George, James, or 'Spencer?' [TWEETS]

Kate Middleton, the Duchess of Cambridge, has given birth to His Royal Highness, a healthy baby boy. Her husband Prince William was reportedly by her side at the time of delivery. The prince himself phoned his grandma, Queen Elizabeth II, to announce the joyful news.

By tradition, the queen is the first to learn of the delivery, ahead of other members of the royal family and Kate's parents. Now the social media channels are abuzz with baby name speculations for HRH. George and James are among the most popular choices.

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Meanwhile, Perez Hilton, a popular Hollywood entertainment blogger, has been "favourited" hundreds of times for his royal baby name suggestion: Spencer, from HRH grandma, Diana Spencer.

All kidding aside, #Spencer would be my vote for the royal baby name! It'd be such a lovely tribute to Diana, who was born Diana Spencer.
— Perez Hilton (@PerezHilton) July 22, 2013

Kate Middleton Gives Birth: 10 Things to Know Kate Middleton and Prince William are joined by millions in celebrating the birth of their firstborn. Here are some of the most interesting things to know about the birth of HRH.

10. If past rules were not altered and Kate gave birth to a girl, she would be call "Lady." But Queen Elizabeth decreed a change, announcing months ago that Prince Charles' first grandchild would be a prince or a princess, and would be addressed His or Her Royal Highness.

9. Prince Charles, the Prince of Wales, has released a statement saying he was "enormously proud and happy" over the birth of his first grandchild.

8. His Royal Highness, the newly born baby boy, has yet to be named, at least to the public.

7. Prince William and Kate Middleton opted not to know the baby's gender ahead of delivery. The internet had bets going whether the new HRH would be a prince or a princess.

6. A huge flock of reporters were outsmarted when the Duchess and Duke of Cambridge managed to slip past them upon entering St Mary's Hospital early in the morning.

5. Kate was a week overdue, but it was not announced whether her labour was induced or not.

4. The great anticipation of the royal baby had been called "The Great Kate Wait" by the media. Now it will be "the great HRH name wait."

3. A spokesman for the Duke and Duchess told The Telegraph he did not know whether the royal couple has chosen a name for their son.

2. In a brief statement, Prince William said he and his wife "couldn't be happier" over the birth of their son.

1. The royal baby boy, now popularly known as HRH in social media, was born at 4.24pm London time. He's understood to be in perfect and healthy condition, weighing 8lbs 6oz.