The American Pie star turned 37 on Monday (14Mar16) and rang in the festivities by announcing that his wife, travel agent Laina Rose Thyfault is pregnant with their first child.

He took to on Monday to share the happy news with his followers, posting a photo of his wife's growing baby bump. He added the caption, "My beautiful wife Laina and I are expecting our first child. 23 weeks along. Gratefully blessed on my 37th B-Day."

Chris and Laina tied the knot during a ceremony in Montana last August (15). The couple exchanged vows in front of 115 guests at the Rainbow Ranch in Gallatin Gateway on the banks of the Gallatin River.

The parents-to-be dated for almost four years after meeting at a mutual friend's wedding. He popped the question in December, 2014

Chris previously dated actress Katie Holmes, and they became engaged in 2003. However, their romance fizzled out a year later, and the former couple split in March, 2005.