Jennifer Lopez Shows Off Lap Dancing Skills for ‘It’s My Party’ Tour Launch

Jennifer Lopez is making sure fans get plenty of bang for their buck on her new tour … or at least one fan per night definitely will .. based on this awesome lap dancing video.

J Lo’s tour kicked off Friday night at The Forum in Inglewood, and while the title is “It’s My Party: The Live Celebration” … we’re pretty sure this lucky guy feels like it’s HIS blowout bash. Yes, it’s an old trick … done by everyone from Britney to Cher to Janet and Mariah — pulling a fan onstage, tying him to a chair and giving him the ol’ bump and grind.

But, Jennifer’s moves came with a little extra something — and we’re not only talking about her world-famous junk in the trunk.

While you’re watching the vid .. remember, J Lo’s done extensive pole and lap dancing training in recent months for her upcoming movie, “Hustlers.”

It shows.

For what it’s worth, Jen’s fiancĂ©, Alex Rodriguez, and their daughters were in the audience — and also greeted her backstage afterward.

Not that J Lo’s lucky fan was thinking even for a second about A-Rod. Well …