British royal SARAH, Duchess of York is to host a reality diet show which sees her moving into the homes of overweight families. The former wife of PRINCE ANDREW has been offered the lucrative deal by British TV network Channel 4, and sources insist she is keen to accept. A Channel 4 insider says, "Sarah is very excited about this TV project and she's keen to do it. "She is looking brilliant at the moment. She's lost so much weight in the past and would love to help other families hoping to shed the pounds. "She is knowledgeable about weight and food issues and she's keen to use her expertise to help others. "She has loved doing TV shows in the States. She now feels confident enough to return to Britain to do some more TV shows. "She is such a friendly, outgoing woman that everyone believes the public will really warm to her." Ferguson fought a personal battle with weight during the 1990s when she dropped from a British size 18 (US 14) to a size 10 (US 6).