First of all the artwork itself is very well done, it is well lit and well made, photographed and the practical effect used to make the model's thighs disappear is very good.
What I like is the meaning of the art. Perhaps mature content means that there is sex involved and it has been removed which would make it a comment on censorship. Or perhaps the art means you would see what is under the model's skirt if you were mature, but since it isn't there it means the viewer is immature. Or because the model is dressed like a teenager it could mean that she is being prevented from exposing herself for her own good.
Whatever the meaning it is simple and effective.