Interesting comment to follow. My biggest issue (literally) is my height. I'm super tall and love heels. They had to be part of this. There is no way i can enter a room unnoticed.
I decided early on they're going to know. I could be ok with that if their next thought was, she looks good. I've always strived to keep my look on point and appropriate (maybe not the heels). Cowering in the corner wasn't going to help my situation. I decided I had to push myself to walk into the room like I own it. Not overly so, just like I belonged there. I think what really helped is all the great people I've met and experiences I've had over the years. It makes the few bad experiences or people easier to brush off. If you are afraid it probably shows in your demeanor. Others will sense that and it will hurt your overall presence. It can be a chicken before the egg situation. You kind of have to fake some confidence before you see that it works and actually gain some confidence. I don't think there's any real tips for it other than positive experiences building on each other. Once you get your feet wet in the right way it's easier to jump all in. Until then the water can feel too cold to even attempt it.