Dad-to-be JUDE LAW has no doubt he's the father of a mysterious ex-lover's child - because he insisted on a DNA test before announcing the happy news.
The actor's publicist confirmed Law was expecting his fourth child on Wednesday and since then it has been revealled that the mystery woman is unknown model and actress SAMANTHA BURKE
But new reports from Life Style magazine claim the Brit wanted to make absolutely sure the unborn baby was his before going public with the big news.
A source tells the publication, "Jude and the mother of the child had a DNA test done to prove that Jude was without a doubt the father."
According to the US magazine, the Alfie star met Samantha in January while he was shooting Sherlock Holmes in New York, and the couple had a brief fling.
The insider says, "After he left, she found out she was pregnant. She tried to reach him, but the cell phone number she had for him was a temporary number that he only used in New York while filming.
"Her only way of contacting him was through Jude's team. She didn't want to go to his lawyer because she was afraid that then Jude would think she was only after his money. And that's not the case at all.
"Jude isn't being a jerk about being a father. He's willing to take responsibility for his baby. And she's definitely keeping it. She's probably about seven months along right now."
The actor has three kids with ex-wife Sadie Frost.