The singer made the announcement on Monday on her Instagram Story, where she shared a photo of herself receiving medical treatment. She was supposed to perform her show Enigma as part of a Las Vegas residency that vegan in December 2018.
“I’m so devastated I can’t perform tonight for so many people who travelled to come see me,” she wrote on top of her picture.
“I have a sinus infection and bronchitis and feel very sick and sad.”
Last week, Gaga had shared a photo of herself returning to Las Vegas for more shows.
Her current residency, which extends until May 2020, alternates between two concerts: Enigma, a theatrical performance of her best-known songs, and Jazz & Piano, which focuses on pared-down renditions of some of her own classics as well as covers.