Carrie Underwood and Miranda Lambert have both been nominated for two Grammys, capping off an incredible year for the pair.MORE: Miranda Lambert's daily diet revealed: how she dropped a dress sizeBoth singers are nominated in the best country duo/group performance category; Carrie for her duet with Jason Aldean, and Miranda for her work with Elle King.WATCH: Miranda Lambert shares unexpected news about the CMA AwardsCarrie is also up for best roots gospel album for My Savior, and Miranda for