Mary Phelps Jacobs Mary Phelps Jacob Mary Phelps Jacob 玛丽•菲尔普斯•雅各布 Mary Phelps Jacob Mary Phelps Jacob 'Backless Brassiere', the first modern bra design. 'Backless Brassiere', the first modern bra design. Mary Phelps Jacob Mary Phelps Jacob, Inventor of the Modern Brassiere