Hi. On the one hand, you are not going to give her the biggest shock, as you have already incorporated femininity to yourself that many men never do, nor want to do. So, the big reveal may not be as big of a leap for her as it may be for many who have a S/O who never showed any type of femininity. On the other hand though, is the reason.... That may still be a big leap for her. It may still be quite a bit for her to work through. The reveal of being a CDer could still be very challenging for her because it is going from being a quirky feminine guy to someone who at least for a short period of time, presents as a girl.
While I am an advocate of reveal as early as practically possible, and I am such an advocate because I did not. I now bear the struggles my wife has because she did not know all about who she was really marrying, even if at the time I wasn't ready to accept myself, but I still knew of it, and had dressed on a handful of occasions prior to being with her. I would perhaps wait on it just a little bit, and I am emphasizing a little here, because right now you are as you say going through the pink fog. That is normal when we break through new ground.
Perhaps waiting just a bit, until the pink dust settles some might be a good idea. You may be able to think a little more clear headed. And, after the reveal, the fog/dust will likely kick up quite a bit. If you are already in it to begin with, it may become a full fledge tsunami. Pink tidal wave at that point perhaps.
If I may offer one last thought, while it is good that your S/O is on the social liberal side, and is not in the hard core religious corner, do not over bet this to her acceptance. It may help some, and you may think to yourself, that her liberalism becomes hypocritical if she has a real hard time with your CDing, it really isn't hypocritical. Liberal women, who are hetero, or even if they are not strictly hetero, are with us for a reason. If they fell in love with a guy, it is that guy they know and want. They may be more apt to consider a relationship with someone who is not the norm, and maybe her acceptance of your femininity is from that, but it is still a game changer when the feminine guy becomes something else. Be patient with her on this. You have had your entire life to get to this point. Her acceptance MAY take quite a long time. It may not, there are some who can flow with it pretty easily, so I do not want to sound like a total debby downer here. I am just saying that you should prepare yourself for some challenges that may take quite a while to get through.
