I wouldn't (and don't) go ANYWHERE while dressed if there are likely to be men there prowling for dates, and doubly so if there is alcohol involved. Ever. And I never dress intending to attract them any other time, nor look or act provocatively if there are any around if I'm out while dressed.
That sort of interest from men is the last thing I want.
But if it happened then yes - I'd tell them, and then decline or avoid any further advances. Or flee, if necessary.
