Pregnant Julia Stiles Marries Preston J. Cook in 'Shotgun Wedding' Celebration

Julia Stiles just went on one last trip before becoming a mom – down the aisle!

Julia Stiles just went on one last trip before becoming a mom – down the aisle!

The actress confirmed on Instagram Tuesday that she and fiancé Preston J. Cook have tied the knot, sharing a photo of her now-husband’s hand on her pregnant belly.

Stiles – who was wearing a white lace dress – wrote, “Who doesn’t love a shotgun wedding?” alongside a winking face emoji.

“They got married Labor Day weekend with two friends on the beach in Seattle,” Stiles’ rep confirms to PEOPLE in a statement.

Stiles and Cook are expecting their first child next month.

The couple got engaged on Christmas Eve 2015 at a private residence in Isla Grande, Colombia, after initially meeting on her film Go with Me – where Cook worked as a camera assistant.

RELATED VIDEO: Julia Stiles Expecting First Child

In 2016, Stiles told PEOPLE that she and Cook were “really slow on the wedding planning.”

She added, “I’m not getting a ton of marital advice… Somebody told me about radical empathy, but I’m still trying to figure out what that means. I’m trying to figure out what makes it radical.”

  • Reporting by SARAH MICHAUD