Is Def Leppard the Greatest Rock T-Shirt of All Time? by Brendon Snyder Number 1 Finally Revealed International trailblazers and Hard Rock Heavyweights. One of the world’s best-selling music artists of all time, Def Leppard have sold more than 100 million records worldwide, they have 2 diamond-classified albums (Pyromania and Hysteria) inducted into the Rock […]