The Anna Karenina star and her rocker wed in the small town of Mazan, where her mother owns a home.
One of Hollywood's most fashionable women, Knightley chose to go casual for her nuptials.
She wore a short white dress with a cropped white Chanel jacket and pale pink flats.
Just 11 guests attended the ceremony but an estimated 50 are attending the reception.
Congratulations to the happy couple!