I remember this Jessica.
She says she went on Atkins for it and binged it all back after filming.
"In Touch magazine reports that after the singer was encouraged to go on the diet in 2001 to compete with the slimmer Britney Spears and Christina Aguilera, the meat-eggs-and-cheese diet caused her emotional and physical problems. “Atkins really messed me up mentally,” Jessica said, adding that she also suffered from bloating and constipation.
After dropping down to 102 pounds and filming a video, she binged on carbs and gained all the weight back. Since then, Simpson has gone on a more reasonable eating plan. “I feel like curves are in,” Simpson said. “They make your outfit look better, and I link having something to pinch.”
http://popdirt.com/jessica-simpsons-atkins-diet-agony/33134/