that could be it... I've never noticed myself though, at least not anything as noticable as in the pics. I've also seen pics of ayu in the same angle without the odd cleavage line.
@xilirationisfun I hope it doesn't sound as if I'm downplaying ayu in any way to you.
I hadn't thought that anyone would really think of the thread very seriously. I love the fact that people really talk about the threads here at ahs