Simon Cowell accidentally reveals baby's sex

Simon Cowell. Photo / AP

Entertainment mogul Simon Cowell has confirmed the sex of his unborn baby.

Cowell is expecting a baby boy with girlfriend Laura Silverman.

He let slip the sex of the baby during a recent interview with US news show Access Hollywood.

Reporter Shaun Robinson asked the dad-to-be if he would be strapping a baby seat into his Bugati sports car ahead of his first child's arrival.

"Yes, of course he's got to learn how to drive very quickly," Cowell said.

Robinson then asked the The X Factor boss the follow-up question, "Have you found out the sex of the baby yet?"

Cowell responded, "I think I just gave it away, Shaun."

Simon Cowell. Photo / AP

The interviewer replied, "You certainly did. Oh my gosh!"

Cowell then added, "Everybody knows anyway. It's a boy ... The first time I saw it (on an ultrasound)... I called him Tad, because he looked like a tadpole. I still wanna call him Tad."

Silverman confirmed reports she's expecting a baby with Cowell earlier this year.

- WENN