CMT Christmas Specials are coming...Miranda Lambert is a cowgirl... CMT has two upcoming holiday specials: CMT Crossroads Christmas: Brett Young and Friends and CMT's A Tennessee Kind of Christmas to air on December 8th.Brett will collaborate with pop, Christian and fellow country artists, including guests from his newly released Brett Young and Friends Sing the Christmas Classics for this hour-long Crossroads special.A Tennessee Kind of Christmas features Amy Grant, Billy Ray Cyrus, Clay Walker, Pam Tillis, Sara Evans and her daughter Olivia, Tracy Lawrence, Wynonna and more sharing holiday memories and performing favorite Christmas songs at…