Bob Mackie, the nine-time Emmy-winning costume designer known as the “Sultan of Sequins” for the spectacular, over-the-top outfits he created for the likes of Cher, Diana Ross, Mitzi Gaynor and Carol Burnett, died Monday. He was 87. His death was announced on his Instagram page: “It is with a heavy heart that we share the news that Mr. Bob Mackie passed away today. He lived his 87 years to the fullest, fulfilling his dream of being a Fashion and Costume Designer, which is all he ever wanted to do. His genius and extraordinary designs will live on forever, continuing to bring beauty into this world.” Mackie worked on Burnett’s acclaimed CBS…