Yes, it might be a little bit of the hormones. However,
I found that I didn't have to prove to myself I was a woman by dressing like one. Sure it helps, but you have to think that you are beginning such a wonderful journey and it's like YOU finding more of YOU (with the help of HRT)!
Now that you are getting closer to that, you might not feel like clothing has to validate you being a woman. I dress in jeans and a t-shirt and I still feel like a woman. There are times when I want to dress sexy for my spouse, but it isn't like before where I NEEDED to dress to feel girlie.