Simon Cowell is a proud new father.
A spokeswoman for Cowell says he and socialite Lauren Silverman welcomed their baby son on Friday evening in New York (Saturday morning AEDT).
The spokeswoman, AnnMarie Thomson, said the infant weighed 2.9kg and is named Eric, after Cowell's father.
Cowell, of American Idol and The X Factor fame, posted a series of tweets about the happy event.
He said the new mum was in "great shape" and describes his new son as "healthy and handsome".
Last year, Cowell dodged questions about his relationship with the married Silverman.
But he later called her "special" and said he feels good about fatherhood, something he hadn't previously considered.
People magazine reported that Silverman's divorce from Andrew Silverman became final in New York in December.
