F
or Rema, the best part of his first trip to the Grammy Awards was getting dressed for it. The Nigerian superstar wore a mound of custom diamonds over snakeskin and leather in his customary black, an outfit that landed him on Vogue’s list of best-dressed stars at the February ceremony. He didn’t win the award he was up for — Best Global Music Album, which went to Chicago native Matt B, alongside London’s Royal Philharmonic Orchestra — but he didn’t really mind. “I was just taking every moment in,” he tells me when I…