What has Brett Eldridge and Thomas Rhett fighting? To see who will be the "headliner" for the 14th Annual CMT On Tour show that both will be playing. Officially, the tour is called "CMT on Tour: Brett Eldredge & Thomas Rhett — Boots & Suits" A reference to both guys high level fashion sense. Danielle Bradbery of 'The Voice' will be joining the boys as special guest on tour with is set to kick off in late October. There aren't any dates released yet (the tour was only announced on Wednesday) but we will let you know as soon as we hear! Past CMT on Tour headliners include: Trace Adkins, Jason Aldean, Luke Bryan, Randy Houser, Jamey Johnson, Miranda Lambert, Brad Paisley, Rascal Flatts, Sugarland, Keith Urban, Jake Owen and Kip Moore.