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An insider has confirmed to E! News that the expectant couple is having a son. "They're both thrilled," the source tells E! News.
The big baby gender news comes just over a month after news broke that the X Factor judge and the New York socialite were pregnant. At the time, Silverman was still legally married to her ex-husband Andrew Silverman, a good friend of Cowell's.
"I'm proud to be a dad," Cowell told the BBC at One Direction's This Is Us movie premiere in his first interview about his impending fatherhood. "It's something I haven't thought of before, and then, now I know I feel good about it. And she's [Silverman] a very special girl."