Gentlemen, there are some debates I stay out of because I don't care, and others that I stay out of because I have nothing useful to add.
The photo I posted came, as Robin suspects, from bustybay.*** And, as Robin suggests, there is a person there who uses the name "digitalbeach***" who apparently has never encountered a woman with natural breasts.
Like Pal, I don't care.
Wendy has said she is natural. I have known a precious few women with breasts that good looking who were natural, and I have no reason to doubt Wendy's word. The only time I would challenge a woman's word on this was if I have had direct, personal contact with her breasts and found them to be otherwise. And, alas, I have not had that opportunity with Wendy.
Incidentally, among women with very large natural breasts whom I have known, such creases are not uncommon.