Nudity can be beautiful. Nudity doesn't have to be crass or pornography.
I understand that this will disappoint some people, but I think it's unfair to classify her with Britney, Christina, etc, because then you'd have to classify any model who posed nude for a photoshoot, for a painting... All those women in paintings from the 1700s, etc, when nudity was REALLY taboo, all the nude ones, are they all sluts, too?