Pharrell to auction Grammys hat
Pharrell's days as a mad hatter may be coming to an end.
Bids had reached more than 10,000 US dollars (£6,013) by Friday afternoon for the brown fedora, which became a trending topic on Twitter after Pharrell wore it.
Proceeds will support Pharrell's From One Hand to Another charity. It provides arts and educational resources for children.
Pharrell will also release the album G I R L on March 3.