When I think about tznius it’s not just clothing and dress codes that come to mind.
Drive around B.P. Monsey Flatbush and many other heimishe neighborhoods and look at the size of the homes going up. I alaways wonder, when people sit down with an architect to build a home what do they say. Please design a 10,000 square foot home for me?
The way we live our lives and the cars we drive should also be done tzniusdik.
I know 2 serious gevirim whose homes are simple and the outside and redone very nicely on the inside. They do’t turn heads or poke peoples eyes out. They are alaways involved in local tzedakos go to a daf yomi shiur and dress mentchlach even on a Sunday.
I know other people who lease cars they can’t afford to buy and live well beyond their means and that to me is not tzniusdik.
The worst part about living in such a showy way is that they are raising high maintenance children who can only live a fancy life after they are married as well.
May we all merit to have the menuchas hanefesh to be able to learn and to fargin yenem.