United Kingdom, May 13 -- Britney Spears has caused fresh fears by posting and quickly deleting a raunchy new social media video.

The 43-year-old pop star has become infamous for her provocative online posts, and her latest involved her sharing a video of herself in a silky white dress, which she pulled down to reveal her bare chest.

Posted on her Instagram, it vanished as quickly as it appeared, sparking a flood of reactions from her concerned fans and followers.

The video showed Britney spinning around in her dress while seductively revealing her figure.

But the chest-baring moment was short-lived, as the video disappeared from her Instagram profile shortly after being posted.

In its place, Britney uploaded a less racy version wher...