The Hangover star Justin Bartha's real-life wedding went without a hitch when he walked down the aisle with fiancee Lia Smith on Saturday (04Jan14). The 35 year old wed the personal trainer in a sunset ceremony on the idyllic island of Oahu in Hawaii. Exchanging vows around a lagoon at the Kualoa ranch in front of just 20 guests, including Reese Witherspoon and her husband Jim Toth, Smith wore a flowing white gown, while Bartha kept it simple in a smart black suit. Bartha's The Hangover co-star Ken Jeong and Jesse Eisenberg also attended. He proposed to the brunette beauty while on vacation in Big Sur, California in early May (13). Bartha famously played Doug Billings in the big screen comedy trilogy, whose bachelor party turns into a disaster during the original movie.