During Muslim rule in India, when Muslims saw such Hindu ladies revealing their bodies a natural attraction towards them started to arise which was something natural, its human nature.
Some Hindu ladies themselves used to go with Muslim men because they were stronger and powerful while others automatically went into the hands of the mighty Muslims as in those days along with conquered land enemy women also used to go into the hands of the victor. And you have to take into account that during those days these things were common. Because of this Hindu ladies starting covering themselves so that Muslim men do not get provoked and to appear less attractive. The blouses got longer and it gave rise to some amount decency in dressing among hindu women.
So after the arrival of Muslims in India Hindu women began to cover themselves up and learned some amount of modesty in dressing. Some women even started veiling themselves. Islam teaches women to dress and behave modesty and after the arrival of Islam in India many hindu women started following it for their own good.
Exposing is something inherited that's why after so many years still Hindu girls are still flaunting their bodies. The blouses are getting shorter, sleeveless, backless and jeans is getting tighter and tighter. Like it used to happen in the past it is still going on and hindu women and muslim men are still attracted towards each other. Seems like 'old habits die hard.' The story of indecency continues today http://indianmuslimpost.blogspot.in/2014/09/culture-of-exposing-skin.html