"Kate Hudson and Chris Robinson have confirmed that they are separated," Cafarelli told The Associated Press on Monday.
The couple married in 2000. They have a 2-year-old son, Ryder Russell Robinson .
Hudson, 27, is the daughter of Goldie Hawn. She was nominated for a supporting actress Oscar for her role as rock groupie Penny Lane in 2000's "Almost Famous."
Her screen credits also include "You, Me and Dupree," "How to Lose a Guy in 10 Days" and "The Skeleton Key."
Robinson, 39, is the lead singer of The Black Crowes.
Attempts by the AP to reach a representative for Robinson were not immediately successful.