Why should this be marked as mature? I'm assuming there are no beaches where you live as that much skin is a generally seen occurrence at them. She is clothed, in a non sexual pose (sensual maybe, but definitely none sexual)and unless the "kids" in question have been living without worldly stimuli other (locked in a room all their life or under a rock) I'm sure they've seen much worse in commercials. Plus there are more "mature" things in museums that and art exhibits that would cause this photographer to be considered a prude. So, please be a little more open minded.
While that is true, no real human body is built with a butt that sticks that far out from the body. Typically the shoulder blames stick out, the lower back curves in ad the butt sticks out in reletive close range with the distance of the shoulder blades, in real big booty cases just a few inches more then the shoulders when held back in comparrison. It just doesn't work like this photo is trying to convery hence the ligting to make it not so noticable but to someone with trained eyes it's easier to tell :/ her upper back should be pushed back more as in sticking out her chest and thowing her shoulders back, her lower back curved in more and then it would make the distance understandable. It's the pose that gives it away. She is standing practically straight so the dramatic curve is unrealistic. The human body does not look like that naturally when standing straight up in such a way. The only times a butt stands out from the back almost an entire foot length in difference is either photo editing or surgery. If her back was bent it could create this illusion(That's why heels add to the illusion of a bigger romp, it's all about posture and posing) but since it isn't, this is how I've come to my conclusion with the knowledge of the human body.
Think about it. If that light effect on the image was gone, look at the line of her back and where it ends and compare the distance from the end of her rump. It's to drastic to be anything realistic and I've seen some pretty big booties but even J-lo's doesn't quite do that without her shoulders being thrown back too and the curve of the lower back being more dramatic
I felt bombarded because I was given a lengthy response on anatomy....in which I kinda still don't understand Sorry about that. Let's not make this bigger than it seems though, I like peace on deviantART (because it's one of the few places on the internet that keeps peace sometimes -3-; )