Diana Ross, if you keep smoking like that, you'll lose the voice that made you famous! Dressed more like a head of state than a pop singer, here's the Motown pioneer taking some time out for a smoke and a think in 1975. Already hugely successful on the back of her time with the Supremes, her best years were arguably still ahead of her, with her film career only just beginning to blossom, and Chain Reaction still over a decade in the future.
It's where she is that may be the most remarkable thing about this picture; she's backstage at a concert, but not her own, nor anyone associated with the whole musical movement that she's famous for to this day - this is a comfortable couch that's been set up for somebody on a Rolling Stones tour!