The Duke and Duchess of Cambridge have revealed the name of their third child.
The baby is called Louis Arthur Charles Cambridge and will be known as His Royal Highness Prince Louis of Cambridge. His full title is His Royal Highness Prince Louis Arthur Charles of the United Kingdom of Great Britain and Northern Ireland
He weighed 8lbs 7oz and Prince William was present at the birth. Their other son's full name is George Alexander Louis, while his sister is Charlotte Elizabeth Diana.
Arthur had been the bookies favourite for the royal baby’s name. The middle name Charles is a tribute to the duke's father, the Prince of Wales.