Britney Spears' positive pregnancy test has been sold for charity - by an Internet casino website which claims the test was found in the bathroom bin of a Los Angeles hotel where the pop beauty recently stayed. The 23-year-old singer announced last month that she is pregnant with her husband Kevin Federline's baby. And Goldenpalace.Com bosses say they have auctioned the stick she urinated on to confirm her pregnancy suspicions, and that proceeds from the kit will be donated to US charities The Candlelighter's Childhood Cancer Foundation and The Easter Seal Society, which helps disabled children. A spokesman for the online gambling emporium says Ottawa, Canada's radio station New Hot 89.9 initially purchased the test from a “connection” the station has at the unnamed hotel where the kit was found.