To promote her new album AKA, she released a 1-minute clip of her and troop of dancers twerkin' it (in tight pants, natch) to her Diplo-produced track, "Booty." We had no doubts the 44-year-old would be able to master the new wave of dance, but damn, if Casper Smart wasn't already feeling pangs of regret, he sure is now. Get it, girl.
