Karl Stefanovic and his wife Jasmine are expecting a new baby girl any day now and the Today host has opened up on becoming a father for the fourth time.

Stefanovic is already a father to three children from his previous marriage to Cassandra Thorburn with children Jackson, 20, Ava, 14 and River, 12.

He said that despite having a vasectomy when he first met Jasmine, he had the procedure reversed and having a child together was always a goal for the couple.

"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.

"I can't wait," he said.

He also says that his new daughter will be an expression of the love he has for his new wife.

"We [he and Jasmine] 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 and we just can't wait to meet this little girl. Just to shower her with all the love that we have."

The couple are nesting in Karl’s multi-million dollar home in Sydney’s north shore.

"I've had a fair few boxes arrive at the door and I've had to get the allen keys out," he revealed.

"I've helped build the cot, they've got this breast-feeding chair thing that I've put together. This is not easy stuff for a guy like me. But we are all ready to roll now."

He says that his older kids are thrilled to see his half-sister into the family, but has confirmed that he and Jasmine have not settled on a name.

"I'm not in such a hurry to go somewhere else and I'm not chasing the yarns overseas like I was when I was building up to this point in my career," he explains.

"And I don't think that's any great sleight on me as a father - it's just the way things were. As a family we were working towards other things but you are busy in your 20s and 30s. You're providing for your family every step of the way.

"I like to think I've been a pretty good dad along the way.

"I think every dad would have a level of insecurity about how good they've been, but at the end of the day my kids are loved."