Britney Spears has teamed up with celebrity shutterbugs at X17Online for a eBay Charity Auction to benefit UNICEF.

According to the eBay listing:

Britney Spears and X17online are giving one lucky fan the opportunity to own an ONE-OF-A-KIND autographed Britney Spears Blackout CD, signed by the chart-topping singer herself! The pop princess has autographed both the insert and the CD in black permanent marker. Britney and X17online are sponsoring this charity auction to benefit UNICEF, so open your wallets and bid high for this unique piece of Britney history! 100% of proceeds will benefit UNICEF and their efforts to help children around the world.