Producers for ABC's Dick Clark's New Year's Rockin' Eve with Ryan Seacrest say singer Mariah Carey will ring in 2017 as the headliner for the show with a live performance in Times Square. Carey will take the midtown Manhattan stage moments before the ball drops to mark the new year. Also on the musical lineup: pop-rock band DNCE, country star Thomas Rhett, Gloria Estefan and the cast of her Broadway musical, "On Your Feet!"