"Their Royal Highnesses, The Duke and Duchess of Cambridge, are very pleased to announce that the Duchess of Cambridge is expecting their second child," Clarence House said in a statement Monday. "The Queen and members of both families are delighted with the news." The baby will become fourth in line to the British throne, and push Prince Harry to fifth in line.
For a second time, William and Kate have been forced to announce a pregnancy before the duchess passed the significant 12-week milestone.
For a second time it's because Kate is suffering from an acute form of morning sickness - though this time she's being treated behind palace walls and not at a private hospital with representatives of the world's media gathered outside.
The sickness - called hyperemesis gravidarum - is a condition that may require supplementary hydration, medication and nutrients.
Scottish First Minister Alex Salmond said: "This is very happy news for any couple, and on behalf of the people of Scotland, I am delighted to send our best wishes to the countess and our hearty congratulations to the royal couple."
The duchess is known as the Countess of Strathearn in Scotland.
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