In a red dress and heels, the Duchess of Cambridge has shown off her third child to the world.

Kate had a baby boy just a minute after 10 last night.

Prince William was by his wife’s side when their son was delivered and was there again today on the steps of St Mary's Hospital in London.

The Duke told reporters he was "very happy, very delighted, then added, "thrice the worry now".

As for a name, the frontrunners include Arthur, Albert, Frederick, James and Philip.

LISTEN TO THE FULL INTERVIEW WITH ROYAL CORRESPONDENT JAMES BROOKES ABOVE