J. Lo joined the all-star line-up at this weekend’s IHeartRadio Music Festival in Vegas and I’m pleasantly surprised to see her bringing back some of her older hits! Don’t get me wrong, her LOVE? music is cool… but there’s nothing like some good old Jenny From The Block!! Hit the jump to see pics and footage of J. Lo performing “Let’s Get Loud”, “Jenny From The Block”, “Get Right”, and “On The Floor”!!