Miranda Lambert is hitting the road this fall for her 2019 Roadside Bars & Pink Guitars Tour—and she’s bringing some heavy hitters with her on select dates, including Maren Morris, Elle King, the Pistol Annies, Tenille Townes, Ashley McBryde and Caylee Hammack. The 26-date tour kicks off on Sept. 13 in Uncansville, Conn., making additional…