(FILES) This file photo taken on April 07, 2016 shows Singer and actress Selena Gomez arriving for WE Day in California in Los Angeles. Teen television star turned singer Gomez has cut short a world tour as she handles the after-effects of lupus. The 24-year-old revealed a year ago that she had secretly undergone chemotherapy to treat lupus, a chronic disease in which the body's immune system fights healthy tissue. / AFP PHOTO / FREDERIC J. BROWNFREDERIC J. BROWN/AFP/Getty Images