Here's a series of images taken at some team sporting event.
I like these images because it seems to me the girl is self conscious about her ass-- note the body language as she places both hands on her tush. It's classic-- she's concerned or self aware of something to do either with her clothing or that part of her body.
Also notice the picture on the top left-- you can make out the panty line. And they are full coverage. You wonder if she was concerned about VPL and tried going big to maximize the area of smoothness--only it didn't work and it obvious she's wearing granny panties.
I wonder if that was the cause for concern?