Carrie Underwood and Steven Tyler: ACM Awards Duet!

American Idol champ Carrie Underwood and American Idol judge Steven Tyler rock out on stage in 2011 Academy of Country Music Awards held at the MGM Grand Garden Arena on Sunday (April 3) in Las Vegas conducted Nevada. The duo Carrie's hit "Undo It" and Steven's classic "Walk This Way". On the red carpet, Carrie had a purple-licious Jean Fares dress, Dana Davis, shoes, and jewels Sutra. During her performance, she wore an Alice + Olivia tailored dress.