Kenneth Starr, a New York investment adviser to celebrities including the movie director Martin Scorsese and the actress Uma Thurman, was sentenced to seven years in prison by a US judge on Wednesday after admitting to defrauding his clients.
Starr (67) apologised to his family and victims of his fraud at a sentencing hearing in US District Court in New York.
“I stand before you a contrite, humiliated and ashamed man,” Starr said.
Since his arrest last May, current and former clients have said they trusted Starr, but should have been more suspicious of the lucrative returns he promised.
“Kenneth Starr pretended he had the Midas touch, but he was in reality peddling fool's gold,” Manhattan US Attorney Preet Bharara said in a statement.
Prosecutors say he defrauded clients of some $33m and asked US District Judge Shira Scheindlin to consider imposing a 12-year sentence.
Since his arrest he has been held in custody. Prosecutors accuse him of defrauding about nine clients, including an unnamed |actress and a jeweller.
Scheindlin ordered Starr to pay $29m (£18m) in restitution on top of the prison sentence.
Scheindlin said that Starr had “lost his moral compass... partly as a result of his infatuation with his young fourth wife”.
Starr's wife, Diane Passage (34), is a former nightclub pole dancer.