Francesca Grillo (R) leaves Isleworth Crown Court in west London December 20, 2013. Two assistants to celebrity chef Nigella Lawson were cleared on Friday of defrauding her and her millionaire ex-husband after a trial that gripped Britain with tales of drug use and marital strife. Sisters Francesca and Elisabetta Grillo were found not guilty of defrauding Lawson and art dealer Charles Saatchi of 685,000 pounds ($1.12 million), saying there had been an understanding they could spend anything on credit cards if they kept quiet about the chef's drug taking.. REUTERS/Luke MacGregor (BRITAIN - Tags: SOCIETY CRIME LAW)