Nicola Formichetti (Italian pronunciation: [niˈkɔːla formiˈketːi]) is an Italian-Japanese fashion director and fashion editor. He is most widely known as the artistic director of the Italian fashion label Diesel, and for being a frequent collaborator with singer-songwriter Lady Gaga. He worked two years (September 2010 – April 2013) with the French fashion house Mugler as artistic director.