In addition to being the man with the most comprehensive collection of buttons in the world – more than ten million cute lil’ thingies – Franco Jacassi is also one of Italy’s leading fashion experts. But his connection to fashion isn’t simply academic; in his Milan atelier, Mr. Button retains a collection of clothing and memorabilia that all the big boys of past and present fashion – from Gianni Versace and Karl Lagerfeld to Miuccia Prada and Thierry Mugler – have consulted in their search for inspiration and unique materials.