I think that sounds like a you problem, cool is in the eye of the beholder (audience) and lots of people love to see the wild variation of fashion (or not fashion) styles that have been displayed by professional musicians.To me, grown men wearing shorts if they are not running in a race is definitely not cool!
Rock musicians have worn whatever they feel like wearing for at least fifty or sixty years now and all it did was make things less boring....IMO.
Having a job/career as a musician has forever been the remedy for not working a strait job that requires following a lot of rules.
As Homer Simson said... "I'm a rocker, I don't care for rules"

