DW and I were at a train station on Saturday which was full of people dressed up for Halloween. A bit ahead of us were two women whose costumes incorporated extremely short skirts. The woman on the left had got her skirt just long enough to cover everything but the woman on the right had the lower half of her bum showing.
DW wanted to say something to her, as she was worried she might not be aware and would appreciate being told. I said I didn't think this was a good idea, as she might have deliberately worn her skirt that short and therefore might react badly to someone bringing it up like it's a bad thing.
We ended up just carrying on to our train and not saying anything. Was I in the wrong to persuade DW not to get involved?
YABU - you should have said something to the woman
YANBU - you were right not to get involved