I walked up the stairs at work (large office of global company) behind a woman in something similar, except that she was also wearing tights and narrow heels. Her dress was shorter, just reached the bottom of her bum cheeks. Also it was stretchy material, so wouldn't have inhibited her walking, if it had reached her legs. I remember thinking that maybe she'd lost her skirt, and had stretched a jumper and put a belt around, it in order to make it look like a dress. The material clung to her body, if she'd had a pimple on her back their would have been a visible bump in her dress.
Anyway, I had no objection to her dressing that way. She was more attractive than the model in that picture. I am a man. These facts may be correlated.