Joan Collins has confessed that she maintains her slimness by consuming only a third of each meal placed in front of her. The former `Dynasty’ star lives by a rule of leaving two thirds of her lunches and dinners on her plate. Joan (72) reveals, “I’m not fanatical, I’m disciplined, and I’ll never finish what’s on the plate, particularly in America. The waitress always asks me, ‘Is everything oK?’, because I only eat one third. They give you far too much. Also, I won’t eat crap. I won’t eat doughnuts and crisps.” [24 January 2006]