Pharell wore a much talked about Vivienne Westwood mountain hat at the recent Grammys, and the singer is now selling it on eBay for a charitable cause. The proceeds of the sale will go to From One Hand to Another charity. "We started my hat auction at $200 (the price I paid for it) and it's already up to over 10K?" he shares with Vogue UK. As of writing, the bid has gone up to $14,500!