It varies, I feel, from person to person. What makes Joe unique, will probably not be the same as for Jill.
Being our own person and true to ourselves is a great one. Throughout history and of course now, many of us have been told what to wear. How to look. What to eat. How to stand. How to sit. What not to say. What to say.
I think you get the drift. Being able to ignore those things and letting yourself be free, wear the clothes that you want to wear. Wear makeup or not. It is totally your choice and doing this is a huge unique aspect.
The Dappled Odysseys 