well there's proof she's using basic beauty trics to get double eyelids - TAPE or whatever other things Japan has. There was some screencaps from her i think PoM encore where she, being who she is, actually cried off one of the eyelids, it was clearly visible lol and her eyes hadn't changed much. japanese know how to do make-up and add circle lenses to that....
also knowing how much japan loves overly photoshopped magazines, really....
this whoile plastic surgery thing will always bring controversy cuz none knows how it is for real.