The actor and his wife, Naomi Lowde, recently revealed that they are expecting an addition to their family, according to FemaleFirst.
A spokesperson for the star confirmed the good news to UsMagazine.com, after Lowde was spotted with a baby bump over the weekend.
Priestley and his wife, who married in May 2005, are the parents of a 21-month-old girl, named Ava Veronica.