Justin Bartha in The Hangover. Picture: AP

Just days after getting hitched, it has been revealed Justin Bartha is also set to become a father for the first time.

The Hangove' star married fitness instructor Lia Smith in Hawaii at the weekend and friends have now confirmed she is pregnant with their first child.

A source told UsMagazine.com Smith "had her hand on her stomach most of the time" and "looked like she had a little bump" under her white gown at the ceremony, held at a historic fishing pond on the island of Oahu.

Later at the reception, held at the nearby Kualoa Ranch, Smith donned a loose-fitting dress and was seen touching her stomach as she walked around.

Among guests at the low-key wedding were Jesse Eisenberg, Reese Witherspoon and her husband, Jim Toth - who is Bartha's agent - and his The Hangover co-star Ken Jeong.

Bartha, 35, and Smith, who hails from Hawaii, were first linked in January last year when they celebrated the start of 2013 together on a Maui beach.

The actor then proposed in May when they made a romantic trip to Big Sur, California.

An insider said at the time: "The trip to Big Sur, the engagement, the ring, everything. So cute."

The West Australian

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