MDD:
“Oomis, the standards do not go by what people think or do.”
Actually, the standards DO go by what people think or do, or at least think. Look throughout the ages (and i am not just limiting the time to 50 years ago), you will see the standards of dress change throughout the generations, and therefore the standards of Tznius as well.
2,000 years ago, men wore robes and noone (men or women) wore any underwear. Do you think that these standards will work today? Would a man or women walk down the street only clad in a robe and nothing else? I don’t think so.
The way people have dressed has changed over the millenia, and therefore, our thoughts of Tznius have changed as well.