The multi-hyphenate superstar chats with InStyle exclusively.Courtesy To bask in the golden glow of Rihanna is to know that her skin is preternaturally flawless. You can hardly believe your eyes, at least in my experience. But the Grammy-winner, designer, and Fenty Beauty founder will be the first to tell you that achieving “snatched pores”—her forever skin-care goal—is hard work. Yes, even for her. “I’m obsessed with my pores; ask anyone!” she …