The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their second child
— Clarence House (@ClarenceHouse) September 8, 2014
The Duke and Duchess of Cambridge's second baby will be fourth in line to the throne behind Prince Charles, Prince William and Prince George. They will be a Royal Highness from birth after the Queen issued Letters Patent in December 2012 extending that title automatically to all children of Prince William and his wife.
They will be a prince or princess of Cambridge and a girl will retain her place in the line of succession even if she later has a younger brother following changes to the succession laws.
The Duchess of Cambridge is again experiencing severe morning sickness and so, like her first pregnancy, the announcement has taken place before the traditional twelve week mark. It's thought the baby is due around April although that is still to be confirmed.
Prince William, speaking at an engagement in Oxford this afternoon, said the couple were thrilled but that it was still early days. Prince Harry, at an event linked to the Invictus Games, said that his sister-in-law was very unwell. He added that he hoped for a niece to see how his brother coped with having a daughter.
The baby will be 21 months younger than Prince George and is likely to be born in the same hospital, St Mary's in Paddington, in the private Lindo Wing.
The littlest Cambridge will be a second grandchild for the Prince of Wales and a fifth great grandchild for the Queen and the Duke of Edinburgh. Their birth will be announced by typewritten message placed in a traditional easel and placed at the gates of Buckingham Palace.