Jenny from the Stumblin' Block

10/8/2007 5:00 PM PDT BY TMZ STAFF
Although her twins aren't due for months, last week Jennifer Lopez was ready to drop -- to the floor!

The 38-year-old pregnant diva nearly ate it big time while performing on a Jamiroquai-esque conveyor belt at the Mohegan Sun Casino in Connecticut. It was her biggest misstep since dating Ben Affleck and "Gigli"!

Interestingly, while Jennifer may have nearly faltered, the track never skipped a beat! Do it well!