The uncomfortably hot temperatures during Taylor Swift's "The Eras Tour" concert in Brazil became a concern for both the American singer-songwriter and her fans called Swifties.

In a fan video taken from one of Taylor's concerts in Rio de Janeiro, Brazil, the singer seemingly struggled to breathe after a performance of "Bejeweled."

Worried Swifties raised their concern about Taylor's concert situation. 

"Yo, this is sickening. She was literally fighting against her own f-ing body not to faint," a concerned fan tweeted. A second fan wrote, "I don't love sharing videos like these because I feel like Taylor wouldn't want us to, but this is so scary. The weather in the stadium was 140 degrees FAHRENHEIT. I know she's prioritizing fans, but she has to prioritize herself too. We can't let her think she has to be perfect."

"This makes me so worried for her. In the live, you could see how red her body was. I really hope she is staying safe and hydrated," commented a third user.

"This is so concerning. She looks on the verge of collapse. I hope she'll be okay. This is so worrying," tweeted another worried fan.

"The fact that EVERYONE there was affected by the heat wave yesterday was truly terrifying. Shame on the stadium for not taking the necessary actions to ensure the safety of the people. This is truly heartbreaking. Rest in peace, Ana.️ I hope better preparations are made next time," opined another fan.

Because of the intense heat in Rio de Janeiro and an unfortunate incident concerning one fan, Ana Benavides, Taylor postponed her second concert in Brazil.

"I can't believe I'm writing these words, but it is with a shattered heart that I say we lost a fan earlier tonight before my show," Taylor opened the letter she shared via Instagram Stories. "I can't even tell you how devastated I am by this. There's very little information I have other than the fact that she was so incredibly beautiful and far too young," she continued. 

Taylor then announced the postponement of that day's show because of the extreme temperatures. "The safety and well-being of my fans, fellow performers and crew has to and always will come first," she wrote.

"The Eras Tour" in Brazil comes after Taylor's successful concerts in Argentina. 

Tags: Taylor Swift The Eras Tour The Eras Tour in Brazil Swifties