Usually I don't comment on my own photos, but since there's a lot of controversy about this picture I want to make an exception:
About the model's age:
She's 22. I'm a professional and I work with professional models.
Is this art or not?
I want my viewers to answer this question for themselves, but think about this: Just because an image has the ability to arouse (some) people sexually, does not make it "low art". If you think it does, then you probably think sexuality is low too and in this case I truly hope you get over your prejudice sometime and start to enjoy life.