Pharrell's white hat was a hit with the 80,000 fans cheering him on in Wembley Stadium.. This image appears in the gallery:Pharrell Williams Live At The Summertime Ball 2014 10. Pharrell's white hat was a hit with the 80,000 fans cheering him on in Wembley Stadium.. Picture: PA 12 images See the full gallery: Pharrell Williams Live At The Summertime Ball 2014