would you want to see your daughters dressed up and in the same type of photos of these women?
would they want to do that in front of both of you?
personally i think you already know what you ought to do.
I agree with you about not wishing for my daughters to emulate this behavior. My concern lies with by shielding them too much that we accidentally create an outlet for rebellion. Trying to strike a balance between the negatives and positives of social media is my concern.