Hypothetical questions, normally deserve hypothetical answers. However, “Feivels” hypothetical question is one of the first simanim in shulchan aruch. There is an entire siman devoted to halachos of getting dressed, including halachos how to maintain a level of Tznius even when nobody is around. After all, hashem is always around.
Is Tznius really about how we appear before other people or how we carry ourselves even when noone is around?
To the woman who laughed at the suggestion that women dress to catch the eyes of men. It is irrelevant WHY a woman dresses provocatively, the fact is, it is wrong. Pink shirts can be tzniusdik and they may not be, the same with blue, black or mandarin orange.