Royal baby: Prince William and Catherine welcome baby boy
22 July 2013 Last updated at 22:56 BST
The Duchess of Cambridge has given birth to a baby boy, Kensington Palace has announced.
The baby was delivered at 16:24 BST at St Mary's Hospital in Paddington, west London, weighing 8lb 6oz.
The Duke of Cambridge said in a statement the couple "could not be happier". He and the duchess will remain in the hospital overnight.
Nicholas Witchell reports.