Perhaps I am the last one to hear about this, but it seems that Lily Allen has a third nipple and she even showed off in a recent obscure interview. The interviewer asked Lily Allen about her third nipple and she showed it to him with pleasure.
The strangest part was that he rubbed it. Now I don't know about you, but for me, a nipple is a nipple and some strange guy shouldn't get to rub it simply because I show it to him.
Lily Allen also admits that her third nipple gets hard when you rub it. That Lily, she's one classy chick.