The men and women of country music hung up their boots and spurs (well, some of them did) and put on their formal fashions for the American Country Awards on Monday night, Dec. 10, 2012, at the Mandalay Bay Events Center in Las Vegas, Nevada. From Carrie Underwood'speachy keenstyle to Miranda Lambert's festive mini-dress, click the pics to see the hottest style statements in country music.