Amanda Holden has said fellow Britain's Got Talent judge David Walliams is nervous but excited about becoming a father for the first time.
The Little Britain star has announced that he and supermodel wife Lara Stone are to become parents.
Amanda, who rehearsed with David for this year's Royal Variety Performance, said she had seen scans of the "good-looking" - and tall - baby.
She said: "He's delighted. I think he's nervous. We saw some really cute scan pictures the other day.
"It's a gorgeous, good-looking baby. I'm sure it's going to be massively long and tall. So good luck with that, Lara."
Amanda added: "He'll be an excellent dad. He's ridiculously in love with Bert, his dog, so he probably needs a human to put some love into as well."
Amanda is introducing some of the acts at the Royal Variety Show, hosted by David, which is being filmed at the Royal Albert Hall for broadcast on ITV1 next month.
She said she was not worried about this year's X Factor ratings and the repercussions for another Simon Cowell show, Britain's Got Talent, because "we're a totally different show".
David, who married Dutch model Lara two years ago at Claridge's hotel, recently announced on Twitter: "Some wonderful news. My beautiful wife Lara is pregnant. We are having a baby! It is due next year and we both couldn't be happier. Dx."