I love my nipple piercings! I've had 11 piercings in all and they're DEFINATELY my favorite. Before I got them done I felt pretty blah about how my breasts looked, but now I think they're sexy as hell. The heightened sensitivity is also a major plus.
And Isis, I would think that getting your nipples pierced could possibly correct the inverted nipple situation. Before I got mine done my nipples were somewhat flat, didn't really stand up from my breast, but now that they're done they have a much nicer "out there" look to them. Just a theory, though.
And my 2cents on the bra convo- I would reccomend a comfortable sports bra or cotton bra. Something that won't move around too much, which can irritate a new piercing. Going bra-less will do that. (Unless, you're toppless, which I primarily was the few weeks after I got mine done).
