Filmmaker Jake Paltrow was one of three best men picked by the groom, Deadsy rocker Alex Puro.
The wedding took place at Los Angeles restaurant Il Cielo.
Life & Style magazine reports the bride walked down the aisle to a song her husband-to-be had written especially for her, and Sokoloff returned the gesture for the couple's first dance as man and wife.
One wedding guest tells the publication, "Their first dance as a married couple was a song that Marla herself recorded for Alex. It was a cover of her singing a Fleetwood Mac song."
The newlyweds are currently honeymooning in Tahiti.