The Duchess of Cambridge has gone into labour, according to Kensington Palace.
Kate has been admitted to the private Lindo wing of St Mary's hospital in Paddington, the same hospital where she gave birth to her first son, Prince George.
This next baby will become fourth in line to the throne, whether it's a boy or a girl, once again pushing Prince Harry down the pecking order.
Sky's royal correspondent Rhiannon Mills is outside the maternity hospital where she received this message from Kensington Palace:
