My father was an attorney all his life and hence wore a suit every day. He was also chairman of the board of the Close Up foundation. He managed to wrangle me a spot in the program (I tacked on to a San Franciso high school). Years later when the founder/executive director retired, both my father and I got invited to the reception. My father noted to me that the function was "Business Attire." An hour later a second message said "That's lawyer business attire, not software engineer business attire."