Gender on a baseline is male and female. Period.
People confuse gender with characteristics of being masculine or feminine. You can be a very feminine man or a very masculine woman. Your gender doesn't change or have anything to do with these differences.
What you wear has much less to do with your lifestyle or how you feel. Clothing is designed in a way that fits the physical differences between a man and a woman. The average woman will not be able to fit in the same clothing as the average men.
I feel like simply squeezing on "women's clothing" and calling yourself a woman is observed. What makes a woman a woman is her reproductive organs and how the body of a female develops. Period.