Kanye West is a lot of things — a rapper, a god, Mr. Kim Kardashian — but last week, he became a fashion designer. As part of New York Fashion Week, West debuted Yeezy Season 1, his fashionable activewear collection with Adidas on February 12. The collection consisted of athletic apparel and accessories for women and men, from seamless tops to nude bodysuits and black leggings. When activewear rose 9% last year, compared with a 2% rise in overall apparel sales, West’s decision to design athletic apparel was an obvious one. Before the show began, a voice recording played overhead…