In the moments of uncertainty, regarding what clothes to wear, what music to listen to, or even the type of food we eat, it appears a totally natural response to choice, to immediately wonder "what will they think?".
Yet if we take just a single moment to actually understand this concept of 'doing yourself for others', does it not seem 100% ridiculous? The fact that so many of us have to consider how OTHERS may feel when we decide what clothes to wear, allows for this attitude to become contagious. The way we think and perform is emanated from within and makes it appear acceptable for strangers to judge a person for their lifestyle choices.
Of course this is within reason, I'm not suggesting its inappropriate to deduce negative connotations from illegal or offensive actions, I'm merely talking in light of individuals doing what they want (and need) to feel good and comfortable as who they are.
There is no simpler way of saying, just 'do you' - do what you want, wear what you want, eat what you want and don't give two fucks about what anybody else is saying or thinking about it.