Malia Jones and Alex O'Loughlin

Hawaii Five-0 star Alex O'Loughlin will soon be saying aloha to a new addition.

O'Loughlin, 35, and his girlfriend, model Malia Jones, are expecting their first child together, E! News reports. Both the actor and Jones, a former United States Amateur Surfing champ, each have a child from previous relationships.

Christine Lahti cast as McGarrett's mom on Hawaii Five-0

O'Loughlin is currently filming Season 3 of the CBS cop drama, which will introduce his character's mother, played by Christine Lahti, this coming year.

The new season of Hawaii Five-0 premieres on Monday, Sept. 24 at 10/9c on CBS.