Congratulations Kelsea Ballerini, she's been invited to join The Grand Ole Opry!! It all happened Tuesday night when she was on stage performing "Girl Crush" with Little Big Town. As Kelsea was singing "I got a girl crush, I hate to admit it"... and then Karen Fairchild sang, "Kelsea Ballerini....... do you want to join the Opry?" Kelsea was in complete shock and burst into tears. Keslea will become the youngest current member when she's formally inducted in in April. Watch the special moment below!