"Hangover" Star Gets Hitched!

He may have played an anxious groom who had the most hell-raising bachelor party in history, but offscreen, Justin Bartha's wedding was picture-perfect!

The Hangover actor, 35, got hitched to his longtime girlfriend, Lia Smith, at Kualoa Ranch in O'ahu, Hawaii over the weekend. The ceremony took place at the venue's historic fishing pond, followed by a reception in the same valley where scenes from The Hunger Games were filmed.

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Their intimate yet star-studded guest list included Reese Witherspoon and husband Jim Toth (Bartha's agent), The Social Network's Jesse Eisenberg and Bartha's Hangover co-star Ken Jeong. (No word yet on whether anyone from "The Wolf Pack" attended.)

An eyewitness tells Us Weekly that "They were sweet together and looked very in love. He was holding her bouquet for her and walked with his arm around her after the vows. She had a big smile on her face and nuzzled her face up to his neck. Their family and friends seemed so happy for them and had an incredible time hanging out in Hawaii leading up to the wedding."

The bride looked radiant in a flowing white gown with an illusion neckline and studded Valentino heels, while her dapper groom wore a black tux accessorized with a white pocket square.

The adorable couple reportedly met during a pilates session at Equinox (the bride is a fitness trainer) and got engaged back in May.

But Bartha isn't the only Hangover star who's settling down - Jamie Chung (who played Stu's wife) got engaged to Bryan Greenberg over the holidays. The Once Upon a Time actress, 30, and the Flock of Dudes actor, 35, celebrated shortly thereafter with a trip to Turks and Caicos.

Bryan Greenberg and Jamie Chung pictured second from the left and right, respectively.
Congratulations to the happy couples!

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By Stefania Sainato