THE DUKE AND Duchess of Cambridge are expecting their third child.

Kensington Palace confirmed the news this morning that the British royal couple William and Kate are to have a sibling to George and Charlotte.

The palace said in a statement that Queen Elizabeth and both of their families are “delighted with the news”.

In her previous pregnancies the Duchess of Cambridge suffered from hyperemesis gravidarum, often described as a severe form of pregnancy sickness that can cause weight loss and can require hospitisation.

The palace has confirmed that she is again being treated for the condition.

“As with her previous two pregnancies, the Duchess is suffering from hyperemesis gravidarum. Her royal highness will no longer carry out her planned engagement at the Hornsey Road Children’s Centre in London today,” Kensington Palace said in a statement.

William is the second-in-line to the British throne below his father Charles, the Prince of Wales.

Read: ‘The queues wound round the embassy building’ – Ireland’s grief at the death of Princess Diana >

Read: William and Harry pay tribute to Princess Diana on 20th anniversary of her death >

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