Pharrell's much talked about mountain hat for sale on eBay
In aid of charity
The hat, which Pharrell wore to this years Grammy Awards, was designed by Vivienne Westwood and is up for $10,500.
All proceeds from the auction go to Pharrell's charity From One Hand to Another. The eBay listing describes the hat as "one of the biggest hits of the 2014 GRAMMY Awards" and also adds the winning bidder will be provided with a letter of authenticity.
You can bid here.