Britney Spears perform las vegas concert mandalay bar circus singer lip sync Britney Spears perform las vegas concert mandalay bar circus singer lip sync

Looks like it was one heck of a peep show!

Various internet reports say that Britney Spears gave her old pal, Lance Bass a lap dance at her Las Vegas concert last night, but our X17 photog (who was sitting just a few feet from the stage) tells us that Britney didn't even touch the former 'N Syncer! Whenever Britney performs "Breathe On Me," she generally drags one lucky dude up onstage, and even though she shook her booty in front of Lance, it was anything but a sexy lap dance!

Our photographer tells us, "The story of Britney giving Lance a lap dance is simply not true - she never touched him. She was always a good few feet away from him. I was RIGHT there the entire time and she wasn't very close to him."

I mean, as far as I'm concerned, a real lap dance involves some bumping and grinding, right? Brit's such a tease!