There are mutliple artists to this name:

1) Irma Vep is a 1996 film by Olivier Assayas starring Maggie Cheung and Jean-Pierre Léaud.

2) Irma Vep is a dog's back leg. Welsh born, Manchester based musician/dancer Edwin Stevens records and performs his solo guff under the pseudonym Irma Vep along with sometime collaborator Dylan 'DBO' Hughes who both play in the popular nu-reggae group Klaus Kinski.

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Artist biography from last.fm