Lovely figure-shot of model in 1990's shiny "croc-skin" effect one-piece swimsuit, by M&S.
Shiny garments like this show every curve, so mdoel had to take particular care of her posture.
To get the shadow, she was lit by just one Courtenay 600 Joule flash head, and 3/4 power, shone directly at the model, from a distance of 5 metres.