Kacey Musgraves Frowns as She Loses to Miranda Lambert at CMAs

Kacey Musgraves frowns as Miranda Lambert wins Best Female Vocalist Awards at CMAs 2013 Credit: Wade Payne/Invision/AP; Jon Kopaloff/FilmMagic

Is there a country catfight brewing? The Country Music Association Awards (the CMAs) brought out all the stars to Nashville on Wed., Nov. 6 -- and "Merry Go Round" singer Kacey Musgraves was one of the night's winners, nabbing the New Artist of the Year trophy and bringing down the house with an electric live performance of her song "Follow Your Arrow." Still, the acclaimed newcomer and Texas native, 25, appeared to have a sour moment during the evening when she lost the Best Female Vocalist trophy to Miranda Lambert.

Although 29-year-old Lambert (looking slimmer and sexier than ever) acknowledged and congratulated Musgraves' success as she accepted her own award, Musgraves was spotted frowning and looking generally unhappy in the audience. (Lambert and Musgraves have collaborated in the past, with the younger star co-writing Lambert's smash "Mama's Broken Heart."

Nevertheless, Musgraves, stunning in a short yellow dress inside the bash, was overjoyed as she accepted her Best New Artist statue. "This first year for me has just been indescribable ... I feel very thankful. Thank you so much," she said.

PHOTOS: Biggest star feuds ever

Tell Us: What was your favorite CMAs moment?