the background of lollywood actresses?

you hear rumours that a lot of these top lollywood actresses come from heera mandi etc, apperently have read on the internet, and is a well known secret, that lollywood queen "saima" was discvered in a "mujra "party, as her ample assets helped her to stardom.
is it true that many of them still engage in "intimate" encounters with rich buisnessman and people from overseas for a couple of $$$$$thousand per night?
why would they need to do this if they are now famous movie stars? or is it just gossip