Simon Cowell and Lauren Silverman 'expecting baby boy'
A source close to the couple claims Simon has been telling friends he is "over the moon to be having a son".
Simon has already revealed he is "excited" at the prospect of becoming a first time dad and said he thinks he will make a good father.
He said: "I am good with kids, because I like kids, I really do like them and I listen to them.
"I always say in life you take every day as it comes and like I said I think I will be a good dad, so I'm excited now."
But the 53-year-old music mogul says he won't be going near any dirty nappies.
Asked what he would do about "really bad nappies", Simon declared: "I'm not doing that.
"I wouldn't do that. 100 per cent absolutely not going near that."
Newly divorced Lauren, who is thought to be due in February, already has a seven-year-old son, Adam, with ex-husband Andrew Silverman.