[hilbert42]

There are multiple ways to tackle the problem, once we had competitions such as 'Miss World', 'Miss America', etc. that were popular but which now are very much seen as sexist.

The message would soon get across if being seen browsing in a clothing store wasn't the best look (like being seen in a porn shop is embarrassing). Or imagine the impact it were embarrassing to be seen at a fashion show or buying fashion magazines. Throughout history there have been bigger changes in social attitudes than that.

A rowdy mob picketing a few fashion shows would attract world attention to the problem.

[MichaelZuo]

How is imposing your worldview on them any better… than them imposing their worldviews on possible discount buyers of those unsold products?

You haven’t actually written the argument yet.