LONDON, ENGLAND – OCTOBER 31: Katy Kennedy, an employee of Angels Fancy Dress, applies fake blood to her halloween costume on October 31, 2014 in London, England. Angels, the worlds largest fancy dress retailer, was founded in 1840 and has supplied costumes to numerous film and television productions as well as to the general public. The week leading up to Halloween is traditionally one of the stores busiest times of the year. (Photo by Rob Stothard/Getty Images)