|Skin Cancer or inverted nipple? You be the judge.|
What I like to do to make sure my nip-nippers never end up coming through my shirt like demon faces coming through the gates of hell is cover them up in duct tape. I take around 15 to 20 strips 20 centimeters long and lay them across each nipple so that the tape creates a mound that eliminates the form of the nipple. Then when I put on a shirt when it's really cold out you can't see a specific nipple structure, it just appears to be a mound, flat silver dollar pancake nipple which is much less embarrassing.
Just be very careful when removing the duct tape. This actually hurts a lot no matter how slowly you take the tape off so I usually just leave the tape on for months until I'm risking a medical problem if I don't remove it. So if you're one of those people suffering from disturbingly large nipples that get too firm in a breeze or cold weather then try my method and let me know how it works for you!