For what it's worth, I'm a male, and didn't even consider this until you mentioned it. I don't think the photos were seductive or had any hint of sexual innuendo. If so, to what point do we self-censor? In some Muslim societies, even the ankles of women (not to mention the faces and necks) are considered improper to share - do we ban all photos of anything female?
I would be more understanding if it showed a woman's bikini or bust areas, but honestly, I can't even be sure on the gender of that leg! (Some males shave their legs!) In my opinion, it comes under fair use.