Rihanna fans were left confused after the singer didn’t show up at this year’s edition of the Met Gala.The singer and business mogul was set to attend the iconic fashion event, held at the Metropolitan Museum of Art in New York City last night (May 6), however, was nowhere in sight for the red carpet event.According to People magazine, Rihanna was planning to appear on the night, but dropped out at the last minute due to illness.