Katy Perry stopped her Detroit concert to help a fan who collapsed after being brought onstage: 'It's overwhelming.'

The "I Kissed a Girl" singer, 40, led concertgoers in a prayer after the scary moment, which occurred during Sunday night show in Detroit, Mich.

The "Teenage Dream" singer, 40, welcomed a few concertgoers on stage during her Lifetimes Tour stop at the Little Caesars Arena in Detroit on Sunday, Aug. 3, and after one of them collapsed on the ground in a startling moment, Perry stayed by her side to ensure she was safe.