Britney Spears' Las Vegas show was interrupted this week by a man rushing the stage ... and very quickly getting tackled by security and Britney's backup dancers. 

She was in the middle of singing her last song "(You Drive Me) Crazy" when this happened. 

Britney was rushed backstage, but later came out to finish the show.

Police identified the stage rusher as 37-year-old Jesse Webb. Apparently, he was asked to leave the concert by security PRIOR to him jumping on stage and dancing. 

Source: Daily Mail