The announcement came by way of a statement released by Kensington Palace shortly after 11am. It was then posted on the palace’s official Twitter page two minutes later.
‘Her Royal Highness The Duchess of Cambridge Kate Middleton was safely delivered of a daughter at 8.34am,’ it said.
‘The baby weighs 8lbs 3oz. ‘The Duke of Cambridge was present for the birth.
‘The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news.
‘Her Royal Highness and her child are both doing well.’
William and Kate’s new daughter, a younger sister for Prince George, who was born at the same hospital in July 2013, is fourth in line to the throne.
Although she is unlikely to ever become queen, it is not unheard of for a second child in the direct line of succession to accede to the throne.