To me, it's feeling assured in myself and my ability to enrich the lives of people I love. It's practicing self care and building self-confidence. It's being there for my friends when they need me. It's feeling connected to my womanhood, to my inner sense of self and my feelings. It's feeling confident and powerful.
I used to feel very ashamed of my own femininity. My experience with masculinity was fragmented, disconnected from my inner sense of self. I felt cut off from who I actually was, so it failed to resonate with my identity. I felt feminine when I could express my femininity without facing judgment or bullying. When I could smile extra wide and wear girly clothes. In middle school, I felt feminine when my friends would take me shopping behind my mom's back to buy clothes. When they'd help me do makeup. When strangers would gender me as a girl, which they often did at that time of my life.
The femininity I felt when I was younger had a lot more to do with what I was actively being denied. It was all the things forbidden from me. It helped me understand my gender identity. And I would say early on in transition, my femininity was still rooted in those forbidden things and reclaiming them for myself. 8 years 10 months in though and femininity has changed a lot for me. It's less rooted in specific individual things and more rooted in myself. It's rooted in doing things that make me feel happy and self-confident.