That's not pimping. For starters those girls aren't forced to do what they do. (Yeah, there probably is an overwhelming minority of cases where they are forced to show their tits. But let's not grasp at straws...)
How many factory style jobs do people work not because they want to but because circumstances force them to? How many employers exploit their workers because its unlikely the workers will fight back?
I don’t think comparing people working in factories to pimps and exploited sex workers (or perhaps pimps and fairly compensated sex workers). They are different things.