The heir to the throne told a 100-year-old military veteran at Windsor Castle that he hoped his second grandchild, already overdue and destined to be a May baby, would be a girl during banter about the difficulties of having a daughter.
Eric Jones, the oldest surviving member of the Welsh Guards, introduced his daughter Lynda Bateman when the Prince asked how many girls he had, said: "One - and that's enough."
Babywatch at the London hospital where Kate is due to give birth is continuing.
Every false alarm and rumour sweeping the world via the internet is prompting a wave of panic among the media pack waiting outside the private Lindo Wing at St Mary's Hospital in Paddington where the Duchess of Cambridge is due to give birth to her second child.
There was a sighting of a blacked out Range Rover flanked by police outriders near the hospital that proved to be nothing.