Emma Stone can do comedies, dramas -- and weddings!

The actress, 24, served as the officiant for the Saturday Nov. 10 wedding of her publicist, Holly Shakoor, to director Ruben Fleischer at Twin Peaks Ranch in Ojai, Calif., attendees confirm to Us Weekly.

Other A-list guests at Shakoor's bash included Stone's boyfriend Andrew Garfield**, Sofia Vergara, Gabrielle Union and Christina Hendricks**.

According to a witness, The Help star, clad in a cream-colored sleeveless dress, was the first to walk down the aisle as a string quartet played "Thunder Road."

"She was very eloquent and composed, and didn't seem nervous at all," a witness tells Us. "She talked about how she met Holly six years ago and then how Ruben directed her in Zombieland."

Indeed, Stone was a matchmaker for the future bride and groom. "They always credited Emma with them finding each other, so having her officiate the wedding was a no brainer," explains the attendee.

As Stone cracked up the crowd, Garfield was "beaming at her" from the benches, the witness continues of her Amazing Spider-Man costar, 29. "You could tell he thought she did a great job, he had a big smile and was listening to every word she said." After the short ceremony, "everyone was cheering and clapping." The crowd boogied to DJ Michelle Pesce during the reception.

Modern Family bombshell Vergara, 40, tweeted her own impressions of the bash, calling Shakoor "beautiful" and adding a snapshot in which she chows down on the wedding cake.

This article originally appeared on Usmagazine.com: Emma Stone Officiates Wedding of Publicist, Director