When Vidal Sassoon helped conceptualize the bob – a blunt, one-length haircut in which the hair grazes the jawline – it wasn’t just a hairstyle. For the brand, it heralded a cultural shift for women to a low-maintenance style, freeing them from weekly salon appointments, stiff lacquered hair and hours under the hood dryer. In celebration of the brand’s 70th birthday, the Vidal Sassoon team sent models and clients – including Swing Out Sister’s Corinne Drewery – a lifelong Sassoon client – wit...