The 'X Factor' boss revealed his baby's sex to 'American Idol' host Ryan Seacrest in a radio interview, while also sparking rumours that he will marry the New York socialite.
When asked if he would soon make an honest woman of his baby-mama, he replied: "I wouldn't expect Lauren to be a single mother".
However, probed on whether he plans to be at the birth of his baby, he said: "Are you out of your mind? There are certain things you shouldn't see and that is one of them."
Cowell previously hinted, in an interview with The Sun, that he may walk down the aisle with Silverman.
“I am not ruling anything out in the future," he told the paper.
He added of their baby: “If it is a boy there will be another me on Earth for years to come.”