I personally am no different as there is no "her" to let out of the box. I have a mixed personality which uses triats of both sides of me in my daily life. I reflect certain aspects in how I dress, act, think and react daily. I will do things some days as the mood takes me (such as wear nail polish to work) other times I can go weeks without touching it.
My wife is aware of how I have combined aspects of what I see (but she does not) of a split in personalities between male and female to create a "whole" me who is the person that is seen daily. My core identity is me, that has never changed - I understand it more now than I ever did but the essence of who I am remains. I balance my sides by wearing female clothes daily, even at work. Today is a casual day, I have female jeans, underwear, a comfort top, female t-shirt and over-shirt on. My cowboy ankle boots are women's. This does not change me because I would wear this out at the weekend with my wife as well.
I suspect for others it may be a case of letting inhibitions go and have the freedom of expression more than they can otherwise due to social reasons. But for me personally, I am no different whether I wear a full set of male or female clothes or I have nail polish on or not. I am me and noone else.