The song's music video also caused controversy. It featured Lopez and her boyfriend at the time, Ben Affleck, who later credited the video with nearly "ruining his career", in several raunchy scenes through the paparazzi's point of view.
The song was written by Lopez, Troy Oliver, Mr. Deyo, Samuel Barnes, Jean-Claude Olivier and Cory Rooney.
"Jenny from the Block" is a R&B and old school hip hop song, which lyrically is about Lopez not changing despite her level of fame and fortune, and never forgetting her roots and where she came from, The Bronx.
The song has been referenced in popular culture and since its release, Lopez has been referred to as Jenny from the Block in the media.
During the production of the album, Affleck and Lopez were a prominent super couple in the media, and were dubbed as "Bennifer".