These routines showcase her unbelievable body and skill as a dancer but also make a strong case for her late-era catalogue — “I’m Into You,” from 2011’s Love?, and the DJ Mustard–produced “Girls” stand up alongside her earlier hits. The brief interpolation of “Hotline Bling” mixed into the should’ve-been-a No. 1 “Booty” showcased the strength of All I Have as a live event: It’s fun to be there. Lopez enacts an onstage camaraderie with her backup dancers. She was a backup dancer once, too, and no matter where she goes, she remembers where she came from. Lopez’s story is every dancer’s fantasy — plucked from the chorus to become a star — with a Horatio Alger twist: Lopez made herself the star she is today through hard work.