I'm writing this from my dressing room in the stadium. The decision has been made to postpone tonight's show due to the extreme temperatures in Rio," she explained.
The decision came one day after Ana Clara Benevides, a 23-year old psychology student, fainted in the front row of Swift's Friday concert in Rio.
She was given 40 minutes of CPR on-site before being taken to the hospital, where she died, her friend Thiago Fernandes told the Brazilian newspaper Folha de S. Paulo.
The concert's organizer, Time For Fun, corroborated Fernandes' account in an Instagram post and added that Benevides died after receiving emergency medical attention for an hour.
According to Folha, the heat index at the Estàdio Nilton Santos reached 140 degrees, causing 1,000 fans to faint, per an unofficial firefighter count.
Temperatures in Rio had been soaring all week — on Tuesday, the heat index hit 137 degrees, the highest ever recorded in Rio.
"I can’t believe I’m writing these words but it is with shattered heart that I say we lost a fan earlier tonight before my show. I can’t even tell you how devastated I am by this," she shared in a handwritten note.