The Australian beauty - who had her first baby Ethan with British rugby player Kris Smith in July - admits the pair plan to expand their brood, and are hoping any siblings will be as well behaved as their first son.
She told radio station Heart FM: "Kris wants a massive family! He`s bought the people carrier, it`s got seven seats and he keeps looking at me going, `OK, when are we going to fill that?`
"I think I need a bit more time to think about it! We-ll see what happens, but look, if we had more kids and they were all as calm and easy as Ethan, it would be magic. He`s such as good baby, I lucked out."
The 38-year-old star recently joked she would like to have a "rugby team" of children.
She said: "I don`t know whether Ethan will get any siblings but I think Kris is quite keen. He wants a rugby team!
"When I was pregnant, it was the most calm I`ve ever been. It`s just beautiful; you`re just in love with your body and everything going on because it`s your little baby inside."