Actor Glenn Howerton is to become a father for the second time.

The It's Always Sunny in Philadelphia star has confirmed his actress wife, Jill Latiano, is expecting a sibling for their son Miles Robert, who was born in 2011.

Howerton announced the news on by sharing a picture of Latiano sitting by a river sporting a baby bump.

In the accompanying caption, he wrote, "My beautiful pregnant wife Jill Latiano... Baby round 2."