A "slutty" shoe is in the eye of the beholder. Some folks here have very odd opinions about how a woman should/not dress.
A discussion on "slutty" socks will be next no doubt.
I believe I agree with this. Different people are affected by different things and to different degrees.
I remember reading an excerpt from somewhere a long time ago about an abbot and some if his monks walking down the road. As they went on their way they were passed by a group of ladies (no mention if they were dressed provocatively). All the monks cast their eyes away or to the ground for fear of being tempted. When the women had passed them by the monks began questioning their superior asking "Why did you not turn away? Have you not fear of being tempted?" To which he responded something like "While all you see is an occasion of sin, I see another one of God's wonderous works, and a creature who God wants to share his Love with."
Somethings are indeed unacceptable, but other things are a matter of perspective/opinion, I guess.