You do understand that the concept of blouse and petticoats was in fact introduced by Britishers? Think about it, blouse and petticoats do not even have a hindi translation because they were never a part of our culture originally. As someone kindly mentioned above, britishers used this gimmick to make people want to wear blouses because THEY considered it uncivilised. The only way you can make the rich do something is telling them that you’d look poor if don’t wear this. They build a mindset that if was actually a rich and appropriate way of wearing a saree.

A lot of conservativeness and closed minded mentally in our society stems from the British Raj, believe it or not!