Country Music Shines at the ACM Awards

Carrie Underwood landed on everyone's best dressed list at the Academy of Country Music Awards, walking the red carpet in a gorgeous purple gown.

Inside, she got a little bit rock-and-roll performing with American Idol's Steven Tyler, singing "Walk This Way."

Rihanna also crossed over to country for the night, belting out a duet with Sugarland singer Jennifer Nettles.

Nicole Kidman walked the red carpet with husband Keith Urban. Inside he sang a love song he wrote just for her.

Taylor Swift was a vision in pale yellow on the red carpet. She said she was thrilled at being nominated for four awards. Inside, she took the big award, Entertainer of the Year.

"Oh my gosh, I have never won this award. I am just losing my mind," said Swift.