After waiting for official word, Prince Williams office announces due date.

According to the Chicago Tribune, the second child of Britain's Prince William and his wife Kate is due to be born in April, his office announced Monday.

William, grandson of Queen Elizabeth and second-in-line to the throne, announced last month that Kate was expecting a second baby to join Prince George who was born in July last year, but no date for the birth was disclosed at the time.

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The statement from William's office also confirmed that Kate is still suffering from acute morning sickness which causes severe nausea and vomiting and requires supplementary hydration and nutrients.

The condition has caused her to cancel a number of official engagements.

Set the tabloid calendar for April. It's going to press.