Nicole Richie has embarked on a dangerous postpartum weight loss regime of chicken broth and breastfeeding in a bid to shed twenty pounds in twenty days. The former Simple Life star, who has a history of dramatic weight loss, is petrified that a plumper build won’t keep BF Joel Madden happy. “She was pin-thin when she met him, and she knows that he is attracted to super-skinny women. She’s dying to look good in a bikini again.”

“Nicole feels like she’s been as big as a house forever, and wants the weight off now,” a Star Magazine source reveals. “Joel is trying to kibosh her extreme dieting. But there’s only so much he can do, because Nicole can be stubborn.”

“She consumes only chicken broth for long stretches of time. She isn’t a huge fan of the gym. For now, she’s mostly relying on calorie restriction and breast-feeding to get rid of the weight. It’s easier and already working, so she’s going full force with it.”