More than 100 guests were invited for the wedding weekend, which started on Friday with a rehearsal dinner at the Ventana Inn and Spa.
A nearby private estate was secured for the ceremony, People magazine reported.
Valentino provided a custom gown, the designer confirmed last week.
According to a source, the wedding decor was inspired by nature, with many branches used to create a ceremony and reception to blend in with the majestic Big Sur surroundings.
The couple, who have been together for four years, got engaged last November.