Justin Bartha is to become a father for the first time.

The Hangover star married fitness instructor Lia Smith in Hawaii on Saturday, and friends have now confirmed she is pregnant with their first child. A source told UsMagazine.com Lia "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, Lia donned a loose-fitting dress and was seen touching her stomach as she walked around.