Make a decision on the piercings and stick with it, I think.
I see the problems with #3 but they might work very well for her. It gives a strong sense of enormous tits and a teeeeeeeny little waist, which works extremely well for some people. They really really like it.
The rumpled hair seems out of place, everything is sleek and in its place, but the hair is a little crazy. It could work, but I'd like to see a more "rumpled" environment and more, um, "rumpled" poses, whatever that means. Less studied, more abandoned? Something like that.