A plaid shirt is a plaid shirt. Not to mention that the quality of men's shirts is oftentimes better, the material thicker and made better, fits better on women who are larger up top than a emaciated stick, and to top it all off, can be much less expensive.
I don't believe in such a thing as "male clothes" or "female clothes" outside of human-created culture.
Don't try to put me in any sort of dress though, "male" or "female", or there will probably be war unless it's Halloween or I'm in a weird mood to put on a costume.