Craziest celebrity auction items:

Lady Gaga lost one of her fake nails during one of her shows in Dublin 2010 and the nail sold at auction for $13,000.

In 2010, someone wanted to see the real Marilyn Monroe -- as in, the bones that made the woman. Chest X-rays of the star from 1954 were bought for $45,000 at an auction in Las Vegas.

A piece of chewing gum that supposedly had been in the mouth of Britney Spears and then spit out backstage at a concert reached a bid of $14,000 on eBay in 2004.