Kate Winslet is auctioning her butt for charity.But its not her physical butt,but a sketch of her butt autographed by the Titanic star.Although it really doesn't look her butt the current bid stands at £600.00.Kate Winslet is one among the 60 celebrities donating a painting or a ketch for the event.The event is being organised by Prime Arts in Partnership in association with Robin Hood Ministries.Its goal is to help relieve extreme poverty across the world and all monies raised will go to supporting various relief projects in Romania, Tanzania, India, and Nepal.Online bidding will end on October 11 at 5pm (GMT), and the artwork will then be auctioned at Bath's Guildhall, in England, on October 13.