Emma Stone officiated the wedding of her publicist, Holly Shakoor, and director Ruben Fleischer at the weekend.
The actress, who stars in Ruben's forthcoming film Gangster Squad, married the couple on Saturday, UsWeekly reports.
The star-studded ceremony took place at the rustic Twin Peaks Ranch in Ojai, California.
Emma's boyfriend, Andrew Garfield, was also a guest.
The bride and groom are said to credit Emma with bringing them together after she starred in Ruben's first big feature, 2009 horror comedy Zombieland.
The actress reportedly wore a cream sleeveless dress and was the first to walk down the aisle, to a string rendition of Thunder Road. But it was her light-hearted and genuine approach to officiating the nuptials that charmed the newlyweds and their guests.
"She was very eloquent and composed, and didn't seem nervous at all," a witness said.
Christina Hendricks, Gabrielle Union and Sofia Vergara were also in attendance.
The Modern Family star spoke about the wedding on Twitter.
"My beautifull publicist Holly at her wedding tonight!!!" she captioned a photo of the happy couple (sic).
Sofia also tweeted a cheeky shot of herself gorging on cake. "I eat Holly's wedding cake!!! We luv u HS!!!" she wrote.
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