The Duke and Duchess of Cambridge will tour Norway and Sweden next year.

Duke and Duchess of Cambridge

Duke and Duchess of Cambridge

The royal couple have announced that they will travel to the Scandinavian countries early next year on behalf of the Foreign Office and, although the exact dates haven't been confirmed, the 35-year-old beauty will be heavily pregnant with her third child.

The news was confirmed on the official Kensington Palace Twitter account, which read: "The Duke and Duchess of Cambridge will undertake an official visit to Norway and Sweden at the request of the FCO in early 2018. (sic)"

The prince, 35, will also make a solo visit to Finland next month from Wednesday 29 November until Thursday 30 November, but Catherine won't be going with him as she is still suffering with hyperemesis gravidarum - a severe form of morning sickness.

The pair - who are already parents to Prince George, four, and Princess Charlotte, two - announced they were expecting another child in September after Catherine got sick, and they have now confirmed their little bundle of joy will be born in April.

A statement issued by Kensington Palace said: "The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April 2018."

The new baby will be the fifth in line to the throne, with Prince Harry - the child's uncle - being pushed into sixth.