Three cases are reported of a previously undefined condition—fetishistic cross-dressing in women. The outstanding common feature found in each woman is a powerful masculinity present since childhood, but no full answer is available yet to the question why these masculine women use men's garments for erotic excitement. Transvestism in women is compared with other types of cross-dressing in women and—in more detail—with transvestism in men. It is hoped that closer observation of sexual states will let us find their true nature and help to determine how women and men differ in their erotic experiences.