13+ Celebrities Who Had Babies With Their Co-Stars

This Hollywood power couple met when they were filming Green Lantern.

After they tried to set each other up with dates, they realized they were into each other.

Now, they're married with two kids and one on the way!

That is, until she made a red carpet debut sporting a baby bump!

Only a year after they first met on the set of Brokeback Mountain, this former couple had a daughter, Matilda Rose.

Sadly, Heath passed away in 2008.

He said that Matilda's financial well-being was an "absolute priority", and that Michelle Williams was "an integral part of our family".

"They will be taken care of and that's how Heath would want it to be," he added

This longtime couple has proven that love in Hollywood exists.

Since meeting in 1997 on the teen horror flick I Know What You Did Last Summer, they have gotten married and had two kids together.

You can catch them as Fred and Daphne in Scooby-Doo and Scooby-Doo 2: Monsters Unleashed, as well as in the animated feature Happily N'Ever After and Star Wars Rebels.

Their romance was off to a bit of an awkward start when they met and fell in love on the set of the Lifetime TV movie, Mind Over Murder.

Clearly, it's all worked out, though, as this couple ditched their spouses, got married, and now have five kids together.

They're one of the cutest couples in Hollywood!

Despite meeting on the set of That '70s Show, it took them over a decade to finally start dating.

Now, the pair are married and have spawned two adorable kids: Wyatt and Dimitri.

This couple has one of the most scandalous "met on set" stories since Pitt was still married to Jennifer Aniston during filming.

After he and Aniston got divorced, the Mr. and Mrs. Smith couple became Mr. and Mrs. Pitt.

They soon welcomed three biological children together, on top of their three adopted kids.

Their divorce was a hard one to swallow since we watched them literally dance into each other's hearts in Step Up.

Nevertheless, they did welcome their daughter, Everly, to the world in 2009!

This former couple worked on two films together before they started dating: Pearl Harbor in 2001 and Daredevil in 2003.

While they were married and had three kids together. They got divorced in 2015.

This longtime couple first met on the soap opera, All My Children.

A year later, they were married!

Can you even believe how grown up they all are now?!

These are two hot parents.

Despite Eva saying she never wanted kids, that all changed when she met and fell in love with her The Place Beyond the Pines co-star.

However, the two are extremely private about their family life, so don't expect to see an Instagram post of the kiddos anytime soon!

Although this couple first met on the set of Jamón in 1991, they didn't start dating until 2007.

They've also co-starred in more movies together: Vicky Cristina Barcelona and The Counselor.

Forget #TeamDean or #TeamJess; it was all about #TeamAdorbz when Bledel met her now-husband, Vincent Kartheiser on the set of Mad Men.

Oooops. Classic Luke.

For over a decade, they were one of Hollywood's most powerful couples after meeting on the set of the Days of Thunder in 1989.

Though they later split in 2001, they did adopt two children while they were married.

These True Blood co-stars took their romance from on-screen to off as they began dating in 2007.

They've since gotten married and went from two to four with their fraternal twins, Poppy and Charlie.

It took McElhenney two seasons of It's Always Sunny in Philadelphia to fall for Olson.

Now, the two are out in the open as they are married and have two adorable sons.