Amelle: "I'm glad Beyonce has put on a few pounds. I think men like women who have a bit of a bottom on them. Dieting is obsessive, it takes over your life thinking about what you can and cannot eat."

Heidi: "This whole size zero thing really upsets me. I was at a hospital the other week and a lady came over and asked for an autograph for her 13-year-old daughter who was in a clinic with anorexia. It is so unrealistic. There are going to be loads of young girls now desperately trying to get to a size zero like all these Hollywood stars. It is so sad. It upsets me."

Keisha: "When I was 16, for some strange reason, I didn't eat hardly anything for about two weeks. I had a slice of bread a day, that was it. I was getting private tuition. My teacher had left the house and I felt a sharp pain in my stomach.

I was in pain for eight hours. I had to wait for my mum to come back. I tried to call an ambulance and reached for the phone but it dropped on the floor and I couldn't move from the spot. I was screaming the house down, it was horrible. I thought I was going to die. I don't know why I was doing it, I wanted a flat stomach or something like that."