Yeah, i thought about that it could be a realy bad mirror,
but there is also a visible distortet line between upper and lower body, above that cross.
Also the upper body has more contrast then the lower body.
Maybe it is mirror distortion + bad camera + distortion, her left leg is also anatomical incorrect.
That distortion line is more likely stray hair in the foreground. Where the colour appears to change is where the hair is too thin to see and/or too light in colour so is out of focus.
Also if you look at her hips, her weight is slightly shifted on to the leg you highlighted. That would explain why it all looks anatomically incorrect.
The picture is unflattering, or rather does her no favours. The pose, angle, hair, panties. It's all a mess. Much easier to take a better pic than photoshop this mess.