Was the princess privacy invaded?

I am reffering to the pictures that were taken of the princess topless in her private place while she was on vacation. The paparazzi king ( I forgot his name), said that she was not in private but she was in public since the camera could have caught a picture of her from the road and that if she did not want her picture taken then she should not have been topless. Was her privacy invaded or was she wrong for going topless.