This is going to be a VERY obscure request... But I've been trying to locate a clip of Yulia from one of her vids (couldn't tell you which one), but the best I can describe is that it's a fairly close up shot, and she's rolling around on the floor maybe? Then suddenly her nipples get hard, but it's almost like they spread out into kind of a "dome" shape, as opposed to the usual hard and perky. It's really quite remarkable.
Anyone? I know it's a tough one.