Kellie Pickler, Luke Bryan, Ashley Monroe and Dailey & Vincent will perform during the sixth annual ACM Honors ceremony taking place Sept. 24 at Nashville's Ryman Auditorium. Dierks Bentley will host and perform at the event recognizing special honorees and off-camera category winners from the 47th annual Academy of Country Music Awards which took place in May in Las Vegas. This year's honorees include Emmylou Harris, Ricky Skaggs, Dwight Yoakam, Kenny Chesney, Vince Gill, Alan Jackson, Bobby Braddock and the late Roger Miller.