It was a busy night for Jennifer Lopez last night -- when she helped announce the Top 13 on "American Idol," debuted her new music video and hit up an after-party for the contestants who made the next round!
First up, J.Lo premiered her music video for "On the Floor" last night, where the 41-year-old showed off her still amazing abs while dancing around in a club in a black bra!
After the show wrapped up, the Top 13, Jennifer, Steven Tyler, Randy Jackson and Ryan Seacrest all went to the official finalist party -- where Lopez continued to show off her taut tummy in a crop-top shirt.
Check out the video and all the party pics above!
