Kate Winslet is auctioning off her butt.
The British actress has sketched a portrait of her curvy behind for the upcoming Paint4Poverty charity auction.
Potential bidders can view and make an offer for Winslet's pencilled posterior at website www.paint4poverty.com. The highest bid currently stands at £450. (Well, now it is £600...or ~$1,200 USD.)
The 'Little Children' actress is one of 60 celebrities to donate a drawing or painting to the event, which takes place later this month.
Other stars include jazz musician Jamie Callum, Led Zeppelin frontman Robert Plant and British TV presenter Chris Tarrant.
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.
All web bids will be listed with the auctioneer and included in the final sale.
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.
Kate is famously proud of her curvy figure and has previously insisted it is her responsibility as a role model to promote a healthy body image to her fans.
She said: "In the past, people have been unkind about my weight, but I'm happy with my shape and size. I don't understand the obsession with skinny celebrities."