Lady Gaga on Monday postponed her concert at Montreal’s Bell Centre that night, pleading illness after performing in heavy rain Aug. 29 at Citi Field in Queens.

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“To my beautiful fans,” Gaga, 31, born Stefani Germanotta in New York City, wrote on Twitter and Facebook, “I couldn’t be more devastated that I am unable to perform tonight. I sing this entire show live, and pride myself in giving it [my] all, but when I sang in the rain at Citi Field I got sick and have been pushing through. I am so sorry to anyone who had their heart set on seeing me tonight. I love you.”

Her next scheduled shows are Wednesday and Thursday at the Air Canada Centre in Toronto.