Natalie's super skinny sister Plum is getting married and the pressure is on for Nat to lose weight so that she 'fits in' as a bridesmaid on the day. Natalie's slim, but curvier than either of sisters, and taller too. No way is she a size zero, and her friends are determined that she doesn't diet down to nothing. But once Nat gets into the polystyrene rice cakes and cottage cheese AND starts losing weight, she can't help feeling a bit pleased with the new skinnier her. Lexie, Billie, Ella and Oliver (who has had a crush on Nat since forever) are all worried, determined to make her see sense. But having an Alpha boy like Ewan Hendricks interested her is just too tempting for Natalie Bonneville St John. Can her BFFs convince her she's going too far?