Greta Garbo was, in private circles, known to carry on quite a few intimate relationships with a few female friends of hers. She is also known for her gender-bending in her career. One such example was in the film, "Queen Christina," in which she played a factual historical character, who was raised by her father to be King, not a Queen. Maybe she proves that there isn't that much difference between the sexes/genders after all.
More info on the film, "Queen Christina," written by yours truly.