"By the time it [The Voice] finishes I’ll be 8 months. I might just make it or I might have a live BBC baby," she said.
Schofield then got more personal information out of Willis than he meant to, when he said, "The others were perfectly planned though," - meaning the births of Willis' older children, Isabelle, six, and Ace, four,fit in with Willis' filming schedule,
But Willis got the wrong end of the stick, revealing: "They weren't planned they just kind of happened."
Willis also said she felt terrible in the early stages of her pregnancy.
"I feel good now. I felt horrific for the auditions. I was pretty bad," she said.
"The only person who knew was my makeup artist, I was trying to have every little nap I could. After about 16 weeks I felt OK."
Yes. You Should Have a Third Child