Eva Rosencrans

She attended the Manhattan Trade School for Girls from 1914 to 1915, where she had consistently good grades, and won first prize for her self-made graduation dress.

[1] At this time, she insisted on her sister-in-law becoming her associate designer and one of her two business partners, alongside a man called Charles Gumprecht.

[1][2] Rosencrans was given a 30% stake and her own designing room, and she and Nettie shared designing responsibilities, which increasingly became more and more Rosencrans' responsibility as Rosenstein focused on the business of managing a highly successful fashion house that was worth over a million dollars by 1937.

In 1953 the journalist Phyllis Battelle acknowledged that Rosenstein did only half the designing for her brand herself, and that she was aided by Rosencrans.

[4][5] However, in 1961, Rosenstein would make the decision to stop offering clothing altogether, and instead focus upon jewelry, perfume and accessories.