As the world celebrates the arrival of the royal baby boy, take a look at the special times in pictures - from the traditional acknowledgements to the visitors at St. Mary's Hospital
Just like it did when George was born two years ago, at 12.30pm today the BT tower lit up with the message ‘It’s a Girl!’ to mark the birth of the new baby Cambridge – just in case anybody in London didn’t already know.
The Royal Navy were one of the first to pay tribute to the new princess. Sailors standing on the flight decks of HMS Lancaster spelt out 'sister' as seen in this charming image.
In tribute to the nation's happy news The King's Troop Royal Horse Artillery fired a 41 gun salute in Green Park, London.
The offical announcement of the royal baby girl's arrival was posted on
an easel outside Buckingham Palace, just like it was with George.
A clue that the Duke and Duchess would leave St Mary's Hospital came when an assistant arrived at the Lindo wing with a brand new car seat in tow.
Ed Perkins, a royal aide, had the responsibility of taking papers with details of the new royal baby from the hospital.
The Middletons were the first visitors to meet the new royal baby boy. Carole Middleton told waiting reporters that the Duke and Duchess of Cambridge and their new arrival were doing 'fabulously' well.
Carole and Michael Middleton smiled to the world's media after their visit to meet their first grandchild at the Lindo ward at St Mary's Hospital in London. Carole Middleton revealed she had not made any suggestions of what Prince William and Kate should name their firstborn.
After the Middletons' visit, it was the turn of Prince Charles and Camilla to meet their first grandchild and the third in line to the throne. Earlier in the day Camilla told reporters that Prince Charles is great with children.
Prince Charles and Camilla visited Prince William, Kate and their new son for around 10 minutes before departing St Mary's Hospital in London. Prince Charles revealed to the waiting media that the world would 'find out in a minute' when the young couple would introduce their newborn to the world.
As the nation celebrated the news of the birth of a royal baby boy, the capital's iconic landmarks were illuminated against the night sky . The London Eye lit up in a patriotic trio of red, white and blue in tribute to the Duke and Duchess' new arrival
One of the tallest buildings in London, the BT Tower echoed the
sentiments of the nation by lighting up blue with the message 'It's a
Wow! Not many new babies receive a welcome like this. The Niagara Falls
looked even more beautiful than usual swathed in blue light.
The offical announcement of the royal baby boy's arrival was posted on an easel outside Buckingham Palace, in line with tradition for all royal births.
The crowds gathered outside Buckingham Palace on a stormy evening in London to celebrate the arrival of the new royal baby - third in line to the throne.