A boob job? Nah, I like my subs au natural as far as that's concerned. Though if someone does opt for mammoplasty I recommend saline pouch insertion from below the breast. Forget that carving the nipple out thing. Though there are happy exceptions, it has reduced sensitivity to almost everyone I know who has done it, and I know quite a few from spending time in various forms of sex work.

Nipple piercing seems to have a much higher success rate in my experience. And they're just so damn sexy, fun, and useful! Ever bell your sub's piercings? Far too much fun! Of course, you could always just use these tweezer style nipple clamp bells. *smirk*