Miranda Lambert and Ronnie Dunn will reveal the nominations for the 46th annual Academy of Country Music Awards at a press conference on Feb. 1 at the Country Music Hall of Fame and Museum in Nashville. Lambert has won five ACM awards in her career, including three last year for album (Revolution), video ("White Liar") and female vocalist of the year. Meanwhile, Brooks & Dunn have collected 16 awards as the ACM's top vocal duo, as well as three entertainer of the year trophies. The ACM nominees for best new solo artist and best new duo or group were announced earlier this month. The ACM Awards will air live from Las Vegas on April 3 on CBS.