The term 'MARC OF FASHION' is a reference to Marc Ecko, an American fashion designer, entrepreneur, and artist. The crossword solution for this term is ECKO, which is the name of his clothing line. Marc Ecko is known for his unique style of streetwear and urban fashion, which has been popular since the early 2000s. He has also been involved in various philanthropic projects, such as the Get Up! Campaign, which works to empower young people.