The X Factor judge, 53, is expecting his first child with New York socialite Lauren Silverman, 36, multiple sources confirm to PEOPLE. The news has been hot gossip among friends recently because Silverman is married to Cowell's close friend, real estate mogul Andrew Silverman.
The Silvermans have filed for divorce, a source tells PEOPLE.
When reached by PEOPLE, an assistant to Cowell's U.K. rep says, "This is a very sensitive issue and all media enquiries are being dealt with by his U.S. attorney." No other calls to reps were returned.