Art begets art

This is a photo I'd like to have taken. Maybe I'll get lucky while visiting one of the many museums in NYC? This little one is copying a pose ("strike a pose, girl") Which one is art?

I've asked myself this question when photographing art. Are any of my photos art? What defines something as art? Is the replication of something considered beautiful art? Then what of a replication of a replication?

Maybe only things created by the hand of man can be called art? Whereas my camera just catches light and transforms it into images. The only thing my hand does is click the shutter.

So, we have 3 levels of reality here: a painting, a girl, a photograph

You tell me - which is art?