Who people think they see

The person who people think they see is irrelevant compared to the person we know we are internally. Identity isn't provided to us via a change of clothing,  voice or hair. It comes from deep within and is anchored there. 

Therefore a prerequisite for authenticity is to completely disregard opinion because the very act of caring what others think contributes to derailing it. 

Expression is only a part of authenticity; it is like the tip of a giant iceberg. Therefore if you are genuine you don't need to worry how you are being perceived because self-assurance and validation comes from deep within the well of our psyche.

You just need to worry about who you feel you are and if we feel like a fraud maybe it's because far too much of our power is given away to others.

For what reason? I can no longer tell you.