The former American Idol judge on Saturday (Oct. 20),The singer Paula Abdul tumbled off the stage during a concert performance in  Biloxii, Mississsippi while singing her 1991 single “The Promise of a New Day,” and while clapping and dancing toward the edge of the stage, shell fell off. 

A fan present that night told KBE that Paula strutting down the stage to say “hi” to his fans and tripped. After the fall, she bounced back and continued her performance.
See the video was captured by a fan in attendance below