Jennifer Lopez has signed on to headline the 49th annual Dick Clark’s New Year’s Rockin’ Eve TV marathon at the end of 2020.She will help ring in the New Year with a special performance during the five-hour show, hosted by Ryan Seacrest.J.Lo will perform from Times Square, just before the famous ball drop at midnight on December 31, 2020.Watch a New Year’s ‘Friends’ Throwback: Ross and Monica’s “Routine”She joins Billy Porter, Cyndi Lauper, and Jimmie Allen among the stars taking part in