"Step Up" producer Adam Shankman said through the social networking service Twitter that more than 200 guests came to Church Estates Vineyards Saturday to watch Dewan, 28, and Tatum, 29, exchange their vows, E! Online reported.
"It was unbelievably beautiful, and I'm so proud to have introduced them," Shankman said.
The couple met while working on the dance-romance film in 2005 and got engaged after Tatum proposed during a vacation in Maui in September.
Actresses Emmanuelle Chriqui and Haylie Duff were members of Dewan's bridal party, while actor Nick Zano ("What I Like About You") served as a groomsman, E! Online said.