Femininity is one of those prettyful (and lately, empowerful) labels that society (a.k.a the patriarchy) uses to otherwise strip women of their status as humans. Some women cling to this label to be otherwise validated by men and women (as I used to be, in my insecure teenage days). Honestly, I'm not a great writer, so the collage below is meant to represent what I see when I hear the word "femininity".
(Here is the bigger version).
Take from that what you will.
I added the dumb fantasy part at the top, because to me femininity (as society sees it) is not only a stupid fantasy, but it's a fantasy where the feminine one is stupid (we're supposed to know more about the science of fashion, babies, and relationships, versus actual lab science, because our fragile feminine minds just aren't built for all those complicated concepts). On a side note, my dad told me he used to go to college with a guy who wanted to marry a "stupid woman", because then he would be able to tell her what to think and what to do. (I think he succeeded, and then they divorced just a few years later, unsurprisingly.)