She also shared a sweet snap of herself and her blossoming baby bump, which she'd captioned: "Countdown is on!!"
In the photo, Jasmine was seen cradling her stomach while wearing a black dress.
Karl, 45, also opened up about his marriage to Jasmine, 36, in the rare interview and revealed the pair planned to have children together right away.
“We discussed it very early on in our relationship and I was very excited about the prospect of having a baby,” he told Daily Mail Australia.
“We do have a very loving relationship and to have a baby as an expression of that love is incredible.
“It’s never an easy thing and I think that kids are a miracle.”
Karl shares three children – Jackson, Ava and River – with ex-wife Cassandra Thorburn.
In the lead-up to the arrival of their baby girl, Karl showed off his handyman skills. “We’re slowly getting a nursery together,” he told Daily Mail Australia.
“I’ve had a fair few boxes arrive at the door and I’ve had to get the allen keys out.”
No doubt, Karl and Jasmine will introduce their girl toOscar, son of Karl’s brother Peter Stefanovic and his wife Sylvia Jeffreys, once COVID-19 restrictions are lifted.