I go to school in Boston, and a majority of the people dress nicely. Not suits or sports coats every day, but definitely presentable items that deviate from normality (relevant to other cities). So as far as sexuality goes, not many people will judge you for wearing nice clothes.
However, when I come home with a few new, more "out there" pieces that are considered standard in Boston, my mom will make a comment about looking gay.
Oh how the world works.