J.Lo That Ass ... Picked Up New Tricks

7/11/2014 12:02 AM PDT

Jennifer Lopez -- That Ass Picked Up Some New Tricks


Jennifer Lopez's booty busted into some new territory -- twerking like a twenty-something during her iHeart Radio concert ... even though she's 44!

It's either one giant leap for uhh ... more experienced asses -- or totally thirsty.