The term Skinny Bitch does indeed refer to a diet developed by
former model Kim Barnouin. The diet itself is an extreme vegan diet
with a list of foods forbidden including all animals, foods with
artificial chemicals and refined flour, sugar, honey, beer,
caffeine. The following website link gives the details on the diet
in entirety and the title of the book written by the model:
http://www.everydiet.org/diet/skinny-bitch.