Rankin’s best photograph: a supermodel in a cow mask

‘I didn’t think models were being treated as people. So we borrowed a farm, put some in masks – and shot them in a cow barn then a pigsty’

Peter Lindbergh’s best photograph: the birth of the supermodels

‘They were a revolution – fresh, fun, outspoken, poking at you, making edgy jokes, getting involved. Wow!’