well, a small suggestion
 

My wife has always had large nipples but ive noticed a huge increase in their size with believe it or not...sucking them. I have been a nipple man since well childhood. so i have always payed alot of attention to her nippes. Then with the birth of our children, 4 of them and her breast feeding, well, they have gotten even bigger. sooo, while browsing my normal naughty sites, i came upon women who wanted larger clits and nipples. they accomplish this by using small syringes and simply sucking their clits or nipples and leaving it for a bit. I supposedly forces blood flow into the area and, well from the pics ive seen, it looks like it works

perfectly lovely as they are PW :)

I really think that piercing them is not a good idea, I know a woman with grossly deformed nipples because of it and the infection that set in, its a risk that you take with any body piercing.

I did see a kit that consisted of a suction bulb and little rubber rings (like o-rings). I the idea was that your first stretched on of the rubber rings over the nozzle of the suction bulb. You then sucked the nipple into the bulb and, while it was stretched up into the nozzle, rolled the ring off and onto the nipple. You then released the bulb leaving the nipple stretched out with one or more rings keeping them erect.

Nice thought!