- The baby boy was born at 16:24 on Monday 22 July
- He weighed 8lb 6oz and was born at the private Lindo Wing of St Mary's Hospital
- Clarence House tweeted the news at 8.35pm, and it's been retweeted over 15,000 times
- A town crier confirmed the announcement outside the hospital
- A bulletin - signed by the Queen's gynaecologist Marcus Setchell, who led the medical team that delivered the baby - said: "Her Royal Highness and her child are both doing well."
- Trafalgar Square was lit up blue
- The BT Tower had the message: "It's a boy!"
- The news was tickered in lights at Times Square, New York
- The Niagara Falls were also lit up in blue
- US president Barack Obama said: "We wish them all the happiness and blessings parenthood brings"
- Australian Prime Minister Kevin Rudd sent a bilby toy and the prince will have a zoo enclosure named after him.
- George is the bookmakers' favourite name, followed by James and Alexander.
- At 14:00 this afternoon, after riding past Buckingham Palace the King's Troop Royal Horse Artillery will stage a 41-gun salute in Green Park.
- BBC royal correspondent Peter Hunt said it was unlikely the Queen would visit her great-grandchild in hospital.
- The Prince of Wales said: "I am enormously proud and happy to be a grandfather for the first time."
- The Duchess of Cornwall said: "It's wonderful for the grandfather. He's brilliant with children so he'll have a wonderful time."
- At its peak, there were more than 25,000 tweets per minute about the royal baby's birth, and it has been mentioned over two million times on Twitter
And a sobering statistic: The royal baby is just one in 2,000 born in the UK yesterday - but poverty will hit one in three of them