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Josh Hartnett, Tamsin Egerton

Michael Kovac/Getty Images for Moet and Chandon

Josh Hartnett and longtime girlfriend Tamsin Egerton are new parents!

According to multiple reports, the Penny Dreadful star and Egerton welcomed their first child in London at the end of November after announcing her pregnancy in July, E! News has learned. At the time they didn't announce whether they were having a boy or a girl, so we'll just have to wait and see if Hartnett has a daughter or a son!

The happy couple met on the set of The Lovers, which filmed in 2010 and 2011. Hartnett and Egerton sparked romance rumors in 2012 but didn't make it official until 2013. Since then they've kept their relationship extremely private, which is how the Pearl Harbor star prefers it.

"I purposefully didn't want people to know too much about my personal life because I think a lot of people give it away for free," Hartnett told USA Today in May. "I think if you spend too much time courting people's attention into your personal life, you lose your ownership of it. That's why I make sure my life is my own. I was not a dumb kid. I was a little bit wary of this business. I saw what it could do to people pretty quickly."

Tamsin Egerton, Josh Hartnett

Karwai Tang/WireImage

At one time Hartnett believed that co-stars shouldn't date, but he later changed his tune in Playboy after he started dating his British girlfriend. "Everybody makes mistakes dating people they work with," he said. "They're whom I'm attracted to because I share experiences with them and understand a bit about what they are and what they do. If I were able to go back in time, I don't know if I could have done anything any different."

Even though he wasn't a dad at the time, the 40 Days and 40 Nights star was already talking about babies. When asked about acquiring wealth as a result of his career, Hartnett added, "If we could just help one another and express ourselves, we'd all be happy. But then I think, 'Oh s--t, there are bills to be paid, and I'd have to get a car that's safe for my kid.' I don't have a kid yet, but that's the idea coming into my head these days."

Now that he has a kid we hope his car is up to snuff!

Hartnett isn't the only celeb with babies on the brain! Hear what newlywed Nicky Hilton has to say about pregnancy.