Mr. and Mrs. Bartha! Hangover actor Justin Bartha tied the knot with girlfriend Lia Smith on Saturday, Jan. 4, in Oahu, Hawaii -- and from the looks of these wedding photos, the big day was a big success.

Bartha's bride, a personal fitness trainer, looked gorgeous in a flowy white gown with a sweetheart neckline and illusion netting. She paired the dress with strappy, jeweled pumps, which could be seen as she and her new husband -- in a dark suit and tie -- walked along a dock together following the ceremony.