George and herself along with their two kids son Boston, who turns two in April, and five-month-old daughter Birdie.
“We are beyond excited to have another mini Birdie join the four of us in July.”
The news follows reports in the Daily Telegraph that the interior designer was three months along and had fallen pregnant just eight weeks after giving birth to Birdie.
George's twin brother Tom and his girlfriend Tahlia Giumelli, 25, are also preparing to welcome their first child.
Whilst brother, Sam appears to be reconciling with estranged wife Phoebe after the pair were pictured looking close during a family day out with their kids, Billy and Poppy in Sydney’s Centennial Park.