At the height of the Profumo Affair in 1963, Keeler sat for a portrait that became famous. The photoshoot, at a studio on the first floor of Peter Cook's Establishment Club, with Lewis Morley was to promote a proposed film, The Keeler Affair, that was only distributed outside Britain. Keeler had previously signed a contract which required her to pose nude for publicity photos but was reluctant. The film producers insisted so Morley persuaded Keeler to sit astride a plywood chair so that whilst technically she would be nude, the back of the chair would obscure most of her body.
At the time, Morley and Keeler were already famous, but the photo propelled the Arne Jacobsen model 3107 chair to stardom. However, the actual chair used was an imitation, with a hand-hold aperture cut out of the back to avoid making it an exact and infringing copy.