Kimora Lee Simmons overcharged Macy’s for her beauty products and then refused to pay back the extra profit, according to a lawsuit filed last week in Manhattan Supreme Court. In September 2006, four months after Simmons separated from her multimillionaire husband, Def Jam Records co-founder Russell Simmons, she signed an agreement to provide Macy’s with her line of cosmetics. But then she allegedly jacked up the price of her beauty products. Simmons declined comment.