© under license to London News Pictures.  12/12/2010 Trafalgar Square, London. Londoners dressed in Santa Claus costumes participate in 'SantaCon', a Santa-themed pub crawl across London yesterday (11/12/2010). Similar SantaCon events take place in various cities around the world, with an emphasis on having fun and spreading seasonal good cheer to passers by. Photo credit should read: London News Pictures