These odds are currently at 1 – 2, royal baby fans will be thrilled to know.
“We think that Prince Louis will have another baby brother or sister join his family in the future. We make it odds on that William and Kate have a fourth baby,” said Coral’s Harry Aitkenhead.
However, Kate is still taking part in royal duties, her absence from which is usually a sign of her pregnancy, given her serious morning sickness.
A body language expert gave Britons her view.