People have a lot of characteristics. Some people want to be pretty, even though they are men.
So i think that Epicene is reasonable in the world.

From  my dictionary: 

EPICENE -  adj.   1.  denoting either sex withoout change of gender   2. Having characteristics of  both sexes or neither sex.                The OXFORD American Desk Dictionary aned Thesaurus

I doubt that many "average " Americans even know the meaning of this word !   I thank you for bringing this term to my attention...  I strongly recommend that you continue your ventures in English vocabulary by exploring a "Thesaurus" web site.   I think there is one that will send you an obscure "word of the day" every day ... and you will learn more vocab and expamd and enjoy your English !