Wolfpack wedding success!

Justin Bartha, 35 — star of The Hangover series, the National Treasure movies and the now canceled TV show The New Normal — married fitness trainer Lia Smith on Saturday, January 4 in Oahu, People reports.

According to Us Weekly, their wedding was attended by Reese Witherspoon and her husband Jim Toth, since Jim is Justin’s agent. The Social Network’s Jesse Eisenberg and The Hangover’s Ken Jeong were also guests at the ceremony, which Us says took place at a historic fishing pond with an altar made of sticks. Sounds cool! A witness said Lia wore a strapless white dress and jeweled sandals.

The newlyweds met during a Pilates class in L.A., where she worked as an instructor. They were first spotted as a couple last New Year's Eve when they were also in Hawaii, where she's from.

They got engaged in May while on vacation in Big Sur. "They are an amazing couple and so gorgeous together," a source told Us Weekly when they got engaged.

Justin previously dated Ashley Olsen for two years. This is his first (and hopefully last) wedding, and thankfully it sounds like he wasn't stranded on a Vegas rooftop before the nuptials.

Congrats to the happy couple!

Sources: People, Us Weekly