Glenn Howerton and Jill Latiano Glenn Howerton and Jill Latiano

Paddy's Pub will need a nursery soon.

It's Always Sunny in Philadelphia star Glenn Howerton and his wife, Jill Latiano, are expecting their first child.

"Check out my beautiful preggers wife, y'all," the actor tweeted Sunday, along with a photo.

Check out photos from It's Always Sunny in Philadelphia

The FX comedy is having a baby boom lately: Stars Charlie Day and Mary Elizabeth Ellis are due in December with their first child, and David Hornsby is expecting his first child this fall with wife Emily Deschanel. Co-stars Rob McElhenney and Kaitlin Olson are parents to 10-month-old son Axel.

It's Always Sunny's Charlie Day and Mary Elizabeth Ellis are expecting

Howerton and Latiano, a model and actress who has appeared on Sunny, wed in 2009.The seventh season of It's Always Sunny in Philadelphia premieres Thursday, Sept. 15 at 10/9c.