"Underclothes Peircings" in airports?

Question

So I've asked around and I can't seem to get a straight answer. I have my nipples pierced and will be going through airport security in London, Ontario (London International), Detroit, MI, and Austin Texas (Austin-Bergstom)... They're too new to come out so i can't switch them to plastic.. 14 g and about 14-16 mm.. not sure at the moment.. standard sized balls... will they go off? and if they wand me will just just assume its the underwire in my bra?

Answer 1

If it goes off, let them know and they can wand you to make sure.

Answer 2

They shouldnt go off.  And if they do, just tell them whats there - they wont care.