Funny experience this morning with a misplaced skirt slit -- What would you do?

So this fairly attractive Asian lady (I believe Chinese) was sitting there waiting across from me, wearing a somewhat short and tight skirt, the bottom was a few inches above her knees.

The thing was, she was wearing the skirt wrong. The skirt was turned so that the slit that goes up the side of the leg was in front instead, centered between her legs. She perhaps thought the zipper in the back of the skirt was meant to be on her side, or just forgot to turn it.

She wasn't crossing her legs, so her thighs were pushing the slit completely open, and her underwear was clearly showing (too bad she wasn't going commando today!).

I didn't say anything, didn't feel it was my place to comment. If I was a female, I'm sure I would have pointed it out.

Would you have said anything? Also specify if you're male or female, if you want.

I also wonder if maybe she was a bit of an exhibitionist and wanted to give people a peek...