Prince William's pregnant wife is expecting her second child next month (Apr15), but several U.S. magazines have published reports suggesting the Duchess had been rushed to hospital and given birth to a baby girl in a dramatic delivery.

Palace officials have now broken protocol to speak out about the false rumours, insisting the royal baby has yet to be born.

A spokesperson for Kensington Palace tells Britain's, "She hasn't (given birth)."

Catherine and William welcomed their first child, Prince George, in 2013.