Carrie Underwood is one hot mama! On Sunday, the country singer made her way to the MGM Grand Garden Arena in Las Vegas for the annual ACM Awards. Upon her arrival, Carrie turned heads in a sheer, beaded number and struck a handful of poses for photographers on the red carpet. Carrie also took the stage for an amazing performance and was spotted mingling with Keith Urban backstage. Read on for more of Carrie's night, and then check out this sweet family moment she shared with her husband and son last month.