Simon Cowell received one of the best gifts this Valentine's Day: the birth of a new son.

The music producer and X Factor judge hopped on a plane and skipped Britain's Got Talent auditions in London to meet up with his girlfriend Lauren Silverman, who went into labor earlier today in New York City. "He has had a plane on standby for a week," a source said.

Hours later, the couple welcomed their first son together into the world at Lenox Hill Hospital. Lauren's parents were also in the delivery room to witness the birth with Simon.

While this is Simon's first child, Lauren has 8-year-old son Adam from a previous relationship with Andrew Silverman. Adam was not present, as a source reveals that he was on a planned trip with his father for the holiday weekend.