Kate pregnant with second child

The Duchess of Cambridge is pregnant with her second child it was confirmed today.

Kensington Palace said that, as when she was pregnant with Prince George, the duchess was suffering from very acute morning sickness (hyperemesis gravidarum) and was being treated by doctors at the palace.

The palace said the Queen and members of both families were delighted.

Prime Minister David Cameron tweeted his well wishes saying: "Many congratulations to the Duke and Duchess of Cambridge. I'm delighted by the happy news that they're expecting another baby," he wrote.

Prince William and Catherine's second baby will become fourth in line to the throne.