In the September edition of Women's Health, Jessica Simpson talks about how weight fluctuations throughout her own life helped make her clothing line a billion dollar enterprise. The mother of two says that she has now "been every size there is," which has helped inform and inspire her company's designs. Simply put, she knows women's bodies well because hers has changed throughout the years.

I know what looks good on a variety of body types. Every woman should feel like she can wear what the model is wearing down the runway.

Studio Vibin' 📸 @kristingram

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Sources: Women's Health