Ms Keeler, pictured right, in a vehicle with her friend Mandy Rice-Davies, who was also implicated in the scandal surrounding the affair It emerged the then 19-year-old Keeler had been sleeping with former Secretary of State for War John Profumo, then 48, and at the same time a handsome Russian spy Evgeny Ivanov.
According to Keeler, she and Ivanov had only a very brief relationship.
An official photograph of the actress, 29, shows her posing on a couch looking almost identical to the late showgirl, as The Trial Of Christine Keeler, a six-part series, is prepared for its as yet unknown release date.
As the story, which happened at the height of the Cold War, unravelled it was revealed Keeler, who denied being a prostitute, had also slept with another powerful man at the same time as her affair with Profumo — Soviet naval attache, Yevgeny Ivanov.
Her Instagram account numbers over 161 000 followers.
Christine died aged 75 in December 2017.