WATCH: Britney calls fan a f**king a**hole live on stage

The 33-year-old star was performing at her 'Piece of Me' show during her Planet Hollywood Las Vegas residency when she's reportly responded to someone in the crowd after they called her a "fat bitch".

The fan in question has uploaded a clip in which you can hear the remark, quickly followed by "She heard me".

The Toxic singer is seen talking to the crowd, who cheer as the music for 'Till The World Ends' begins to play, then as she turns her back to the audience, it is said she heard the comment and quickly called the 'fan' out in front of the entire crowd.

While the clip in question sounds like she's saying "f***ing a**hole", some fans have taken to Twitter to argue that she was in fact referring to more than one member of the audience and actually said "f***ing a**holes".

The outburst came after Britney asked the audience if they wanted "one more song", with some fans suggesting she'd heard a negative response.

Can we all just "Just leave Britney alllloooonnnneeee"?