"To the nines!"
Since she is doing it I told her that I will do the same and wear a nice skirt suit with my black pumps and my pearl earrings (perhaps something similar to the image below). I think that's a pretty professional look to which I will add minimal jewelry; perhaps just a simple pendant and a one ring.
This will be my first professional business meeting as a woman and I am looking forward to it. All the practice living part time makes it that I am not the least bit nervous but I just see it as another step in my exploration.
I will post about it afterwards.