Miley Cyrus fans in Kansas City, Mo., will have wait a little longer to see the 21-year-old singer in action. Cyrus canceled her Tuesday night concert at the Sprint Center after she was hospitalized for what her managers described as a "severe allergic reaction to antibiotics." "Cyrus has been hospitalized for a severe allergic reaction to antibiotics and has been placed on medical rest by her doctors. She will not be able to perform as scheduled," the Sprint Center said in a statement. Ticket-holders will be able to get their money back. The "We Can't Stop" singer has felt ill in recent days. "Why is this cough coming back #sorethroat #feelingnobueno," she tweeted Monday. "Fever fever go away," she added. Cyrus apologized to her fans for canceling her gig. "I wanted so badly 2 b there 2night. Not being with yall makes me feel shittier than I already do," she tweeted, then added a photo of herself in the hospital. Mr. Octopussy & some amazing Drs are taking good care of me pic.twitter.com/7FJFxYa7M5— Miley Ray Cyrus (@MileyCyrus) April 15, 2014 Cyrus also canceled her show in Charlotte, N.C., earlier this month after coming down with the flu.