Britney Spears sparked concern after holding a lighter to her tongue while dancing to JLo's song Booty in a bizarre video – after declaring she's meditated to Shakira's Hips Don't Lie.
The Toxic songstress, 41, showed off her moves in her gym gear – wearing a cropped top with the word 'LOVE' written across it in the Instagram clip.
Britney's preview picture shows her clutching a lighter, with the flame just inches from the chart-topping hitmaker's face – to the tune of Jennifer Lopez's song.