Taylor Swift and Jennifer Lopez – Jenny From the Block – VIDEO 08/25/2013 mj santilli American Idol, Jennifer Lopez 12 Taylor Swift’s special guest last night at her Los Angeles concert was the once and future American Idol judge, Jennifer Lopez. Hooray? The two performed Jlo’s hit “Jenny From the Block.” Sort of an odd choice, don’t you think? Are those Jlo’s dancers? WHERE’S CASPER.
