The British royal court has announced that the Duke and Duchess of Cambridge, aka Prince William of Britain and his wife Catherine, are expecting their second child. The announcement seems to come because the Duchess, as last time, suffers from severe morning sickness and therefore had to bow out from a visit to Oxford today. The announcement does not say when the child is expected.
The child will be fourth in line to the British throne and will hold the style of title of Royal Highness and Prince(ss) of the United Kingdom of Great Britain and Northern Ireland (styled "HRH Prince(ss) _____ of Cambridge" within Britain). This follows from Queen Elizabeth II's decision of 31 December 2012 to alter the previous rules under which the royal title was restricted to the eldest son of the eldest son of the Prince of Wales .