After welcoming their newborn baby boy earlier in the day, the Duke and Duchess of Cambridge left the Lindo Wing with the little one yesterday evening, 23 April 2018

We're yet to find out the tot's name, but he was born at 11.01am weighing 8lbs 7oz on 23 April 2018

The tiny prince is now fifth in line to the throne

Red for St George's Day? The Duchess of Cambridge stepped out for her first appearance with their baby boy in a ruby red Jenny Packham dress

The couple stare adoringly at their baby boy

The couple greeted the media and royal fans enthusiastically

The baby is the Queen's sixth great-grandchild

At the moment, royal watchers are predicting the names Arthur, Albert, James, Philip, Thomas and Edward

Held tight in his mother's arms

The little one remained asleep in most of his first snaps

The little one was wrapped up warm in a blanket and a knitted hat, but towards the end of the photo session, the Duchess told her husband that she was worried the baby was getting cold

Earlier in the day, Prince William left to collect Prince George and Princess Charlotte, and joked that the newborn brought "thrice the worry now"

The Duke of Cambridge then arrived back with excited big brother and sister, Prince George and Princess Charlotte

George seemed shy as he arrived at the hospital, but Charlotte was all waves for the cameras

With the birth of her little brother, Princess Charlotte has made British history as, for the first time, she is higher in line to the throne than a direct male heir, since the Queen changed laws regarding succession to the British throne with the The Succession to the Throne Act, 2013

The two royal children make their way into St Mary's Hospital to meet their baby brother