Carrie Underwood won the Academy of Country Music entertainer of the year award on Sunday night in Las Vegas. She was only the seventh woman ever to earn the honor. "I've had a lot of good moments in the last four years," she told the audience. "This one takes the cake!" Underwood also earned the top female vocalist award, while Brad Paisley took home the top male vocalist honor. Taylor Swift won album of the year for Fearless, and Rascal Flatts scored for top vocal group. (Photo: WENN)