Seems like Miranda Lambert is happily singing divorce blues after her separation from Blake Shelton as she performed Loretta Lynn’s classic song about divorce, Rated X, at the ACM Honors on September 1. The 31-year-old songstress took to the stage at the country star-studded event in an electric pink Randi Rahm dress and styled her blonde hair in chic loose waves, reports Us magazine. The Little Red Wagon hit-maker separated her paths from the 39-year-old singer in August ending their four-year marriage.