Lady Gaga's Poker Face Necklace Up For AuctionLady Gaga is auctioning off the metal necklace she sported in her “Poker Face” video. The jewelry, designed by Brian Lichtenberg, will be available for bidding from now until June 24. In a twist on online auction formats, the lowest unique bidder will win the necklace.

Users will be asked to pay $1 per bid to take part in the charity auction, which will benefit The Lupus Foundation.

The cause is one close to GaGa’s heart – the star’s aunt Joanne died from the disease and she revealed she tested “borderline” positive for the condition earlier this month.

She said, “Lupus is in my family and it is genetic. My mother told me the other day that my fans were quite worried about me because I did talk about the fact that I was tested for lupus. The truth is I don’t show any signs, any symptoms of lupus. But I have tested borderline positive for the disease.

“As of right now I do not have it, but I have to take good care of myself.”