Billie Eilish halted her show at London's O2 arena on Saturday night to check on her fans' safety as the packed crowd began to overheat.
The 'Bad Guy' singer was performing at the O2 at the end of a hot day in the capital when some of her fans began to suffer from the rising heat of a summer night at the packed arena.
According to BBC news, she paused her performance and asked the crowd: "Are you all ok? People were fainting and getting pulled out. It's hot, I know."
Fans had apparently said they were getting squashed, leading Elish to pause the music until the crush near the front of the audience began to ease.
She told her fans: "Take a step back, give everybody some space. If someone looks a little woozy, just tell someone."
The US singer, 20, added: "Don't try to save feelings."
At another point in the concert, members of the audience formed a protective circle around one fan who was struggling in the heat and alerted security staff with the lights on their phones.
Eilish stopped her show for three minutes while help was sought and thanked the staff for their help.
The star is known for taking her fans' safety seriously - this year, she has also interrupted her own shows in Atlanta and New York to check on fan safety.
Last year, Travis Scott's Astroworld festival in Houston ended in tragedy when 10 people were killed in a crowd crush, throwing the issue of concert safety into the spotlight.
A number of teenagers were among the victims and more than 300 people were treated for injuries from the crush.
Some of those hurt filed lawsuits against Scott, with accusations that he and other performers on the night had "incited" the crowd, adding to the problem.
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