Ariana Grande Apologizes for Canceling Las Vegas Concert as She Battles Health Issues. ET learned on Friday that the "No Tears Left to Cry" songstress canceled her concert at the Cosmopolitan in Las Vegas on Saturday. While many fans were looking forward to seeing Grande over the New Year's Eve weekend, the singer apologized for the cancellation and revealed that she's "working through some health issues."Vegas, I'm currently working through some health issues and am beyond sorry I won't be able to see you this weekend. I love you and so look forward to seeing u and making it up to u next year," Grande, 26, wrote on her Instagram Story. Meanwhile, the Cosmopolitan of Las Vegas told ET in a statement: "Due to unforeseeable health reasons, Ariana Grande has cancelled her show at The Chelsea at The Cosmopolitan of Las Vegas on Saturday, Dec. 29. Guests are able to receive a full refund on tickets through their specified point of purchase. A rescheduled date has not yet been determined at this time."Grande reportedly has been ill all week and is suffering from bronchitis, according to TMZ, who was first to report the news.