Visible tattoos on women are definitely alluring. The visible tattoos demonstrate a woman has the personal strength to express herself combined with confidence. Personally, I find female neck tattoos to be the best.
It depends on if the woman herself is sexy. If she is, it's sexy, but if she's not, then it's not. On Pink, for example, it's super sexy because she's sexy, but on someone else, someone who isn't sexy, not so much.