The event aired live on CBS Sunday night from the MGM Grand hotel and casino.
Lambert also went home with the trophies for Single Record of the Year, Song of the Year and Video of the Year for "The House That Built Me."
Sugarland won the statuette for Vocal Duo of the Year, while Lady Antebellum earned the Vocal Group of the Year title, as well as the trophy for Album of the Year for "Need You Now."
The Band Perry was declared New Artist of the Year and New Vocal Duo or Group of the Year.
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