Just being yourself is all you really need to do. Being fully yourself is authentic, it's attractive, it gives you energy, and it makes people around you often feel comfortable being themselves too.
I'm at CHEO, teaching yoga in the eating disorders program today. I am on a short break between classes. I found myself reminding the girls in my first class that they don't need to do anything to make themselves attractive to others-that just being fully who they are is attractive. And as I was saying that, I noticed that I was reminding myself of that as well.