When I visit the US, I meet CEO's dressed in shorts and polo shorts or t-shirts and jeans and for the females something straight out of Baywatch. Yet in India, that taboo could get you scorned by the media and public. Casual wear is worn at home and not outside. Why? Because Indian's mistake a decent wardrobe for success and polish for smarts.
The second rule of thumb is don't be too visible. Mostly due to the tax pricks and grist seekers, but also because some jealous types take it upon themselves to become your personal battering ram. There are literally millions of people out there with nothing to do but to seek ways of destroying your good name. Am I right? Let's say I am right then.
Some feel there is a conspiracy of privilege in India (and they'd be right too just look at our social privilege system for the wealthy). In fact, if you're part of the lucky sperm club and end up pushed into the world of the higher castes, you can expect far greater opportunity then the so called untouchable castes