Sadie Frost furious her “irresponsible” ex-husband Jude Law is having another baby.

Sadie Frost is furious her “irresponsible” ex-husband Jude Law is having another baby.

The actress-turned-designer – who has three children, 12-year-old Rafferty, Iris, eight, and Rudy, six, with the Hollywood actor – is livid with Jude for getting model Samantha Burke pregnant following a brief romance in January.

A source told Britain’s Daily Express newspaper: “She is deep down furious with Jude – not for having the fling but for being irresponsible – and wants him to pay whatever it takes to keep the family protected from further embarrassment.”

The ‘Sherlock Holmes’ actor met the 24-year-old model outside New York's 1OAK nightclub earlier this year, before taking her for food at a local diner and back to his hotel room.

The pair met up a few times before Jude broke it off and Samantha is now pregnant with his daughter, who she plans to call Sophia.

Sadie, 44, is concerned about the how the pregnancy is affecting their children.

The source explained: “Jude’s children, particularly Rafferty, are bewildered by the whole thing. They hate seeing their dad in the news and reading about his private life. Sadie is putting on a brave face but deep down is shocked by the whole thing too.” Sadie is currently on the Spanish island of Ibiza with her kids, including her 18-year-old son Finlay, from a previous relationship.

Jude and Samantha’s relationship reportedly started just days after he had returned from a holiday with Sadie in Brazil.

He has vowed to support Samantha and the baby, which is due in October.