I wish we could bluntly say: " people should dress appropriately for the place/situation", but "appropriate" might differ based on age, culture etc. I learned my lesson when my son was in a daycare: there was a teacher with tattoos, piercings and extreme hairdo, I felt like a bad mother leaving my child with her. Turned out, she was one of the best teachers he has ever had! Let's judge people based on their personalities and skills, not on their clothes! There are places/situations that require certain attire, but there are also the ones that don't, it's good to have variety.