With the scarily skinny silhouettes of some celebrities making the headlines, Louise Redknapp, a petite size 8, confronts the current obsession with being dangerously thin. She attempts to drop to a UK size 4, the elusive American size 0, in just 30 days. Along the way, she is subjected to a grueling boot-camp fitness regime, talks body image with one time anorexia sufferer Mel C and visits the Rhodes Farm Clinic for eating disorders, where she witnesses how lethal the current trend can be.