RIO DE JANEIRO, BRAZIL: An undated video of Taylor Swift gasping for air during a concert has raised eyebrows among fans, causing them to worry about the pop star's health amid her demanding tour.

Several reports, including one by Page Six, suggest that the incident occurred in Rio de Janeiro, Brazil on Friday night.

The artist recently announced on her Instagram story that her second concert in Rio de Janeiro, scheduled for Saturday night, has been postponed due to the intense temperatures.

However, the video showing Swift breathing heavily does not provide sufficient evidence to confirm that it was filmed in Rio.

Undated video of Taylor Swift panting heavily goes viral

A video from the concert, shared online by a fan on Saturday, showed the star seemingly having difficulty breathing immediately after performing her song 'Bejeweled' at the conclusion of her lengthy performance, said Page Six.

"This video makes me worry for Taylor so much, I truly hope she’s okay and that she’s taking care of herself," a fan wrote on X in response to the video.

"I hope she knows that she can adjust tonights show to add more water breaks or lighter costumes, her health is far more important," the fan added.

Another fan claimed, "Taylor Swift on the verge of fainting while performing in Brazil n1."

Others praised the pop star for postponing the Saturday night’s show. The decision was reportedly made following the tragic incident where Ana Clara Benevides, an attendee of the concert on Friday night, suffered a fatal cardiac arrest due to the severe heat.

"After seeing video of Taylor facing difficulty in breathing, after losing Ana yesterday it was best decision to reschedule tonight’s show," noted a user.

"Her note is What is happening, Rio? How hot it actually is? What will happen in February," one wrote.

One fan penned, "The breath control Taylor has is INSANE so to see her breathing like that is scary, i’m so glad they postponed tonight’s show omfg."