Ames that may work for you, but would never work for me.
Why do I have to keep the laws of tznius? Because Hashem decided that female body parts are ervah, and gave the rabbonim the knowledge/power to pasken as to where those defined lines are. I am not covering up for any man or any other woman – just for ME.
If someone has shalom bayit issues because they see a thinner/prettier/better dressed etc. they have more marital issues. There is always someone “better” out there. There is no excemption for a man not to control his thoughts even amongst women who are completely tzanua.