Doing a presentation on the representation of androgynous characters in anime...I wonder if I'd enjoy studying gender as a performance in my field overall. I don't even know if I think it's a performance. Obviously, our gender identities or lack thereof are pretty innate...I'd have to take a long period of time to distinguish between identity and expression. And even then, if I was focussing primarily on the representation of androgyny the expression, I'd miss out on the importance of androgyn as an identity.
But the expression of gender in terms of clothing, assigned cues that are defined male or female...well that's right on the mark, performance.