Britney Spears hurt her ankle badly during her Las Vegas show on Wednesday night, she's been forced to cancel two shows.
Video footage of the performer shot by an audience member shows Spears kicking and high-stepping on high-heels during her single "(You Drive Me) Crazy" before her left ankle gives way.


Spears took to Twitter Wednesday night to thank her fans for the well wishes, saying she "had a little scare on stage tonight with my ankle but I'm ok!"

Her shows for this coming Friday and Saturday will be rescheduled after doctors advised her not to perform ... opting instead to rest her injured ankle so it can heal.