Christina Augilera Nude. As In Completely Naked

I have no idea where this Christina Aguilera nude picture came from, or how old it is, but I know I've never seen it before, and that makes it new to me. Also, I don't think I should really need a reason to post pictures of Christina Aguilera naked. I believe the picture was taken by David Lachapelle, but other than that, I'm at a loss. Not that it matters. You know she's naked, right?

Update: So this picture is from the September 2004 issue of Interview magazine, and also features Pamela Anderson. Now, some people are saying Christina Aguilera's nipples have been photoshopped into the image, but I'm not sure that's the case. First, Interview is a notoriously hard magazine to scan, because of the paper quality. Second, the full image is rather low-res, and if indeed the cropped version is from a different scan, at higher resolution, it could well be legit. But I'll let you decide for yourself.