During a performance of "Backstabber" at the Lollapalooza festival on Thursday, pop star Kesha dramatically waved a knife around while dancing, thrusting it in the air toward one of her dancers.

Kesha's knife-wielding Lollapalooza set was apparently much more real than anyone knew — including her. The "Tik Tok" singer, 37, claimed in a post on X that a knife she performed with at Lollapalooza ...

Kesha delivered a cutting-edge performance at Lollapalooza … quite literally. After hitting the stage at the music festival in Chicago on Thursday, the pop star, 37, revealed the prop blade she used ...