The show must go on—even if you're bleeding on stage. Jennifer Lopez proved yet again that she's a pro when it comes to entertaining the crowd. The 44-year-old songstress took the stage at the iHeartRadio Ultimate Pool Party this weekend at the Fontainebleau Hotel in Miami to perform for a number of screaming fans, but she also suffered an unfortunate injury in the middle of her dance routine. "Can we take it back to the J.