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Def Leppard is a British rock band formed in 1977. Storm Thorgerson, a renowned graphic designer, created album covers for the band in the 1980s. These covers include the iconic artwork for their 1987 album "Hysteria," which features a close-up of a woman's face with a zipper over her mouth. Thorgerson's surreal and thought-provoking designs became synonymous with Def Leppard's music, helping to establish their visual identity.