Carrie Underwood: All-American Girl, a spotlight exhibit at the Country Music Hall of Fame and Museum in Nashville, will open June 11. The centerpiece of the exhibit is the merlot silk taffeta dress Underwood wore during the 2009 Academy of Country Music Awards in Las Vegas. Created by Miami-based designer Rafael Cennamo, the dress includes 120 yards of fabric and an eight-foot-long train. Underwood wore the dress during her April 5 performance of "I Told You So" at the ACM Awards. She was named entertainer of the year and top female vocalist at the awards show. "It was an honor to wear such a beautiful dress during one of the most special nights of my life," Underwood said. "I truly felt like a princess!" The Hall of Fame exhibit runs through the end of the year.