Kate O'Mara, who died today (30th March 2014) aged 74, pictured here in a publicity photo in 1971, at which time she was playing the villain in the ill-fated stage version of the British television show, "The Avengers".
Original B&W photo.
The painting, “Bus Stop” by Earl Moran, is from 1946, so I think this posed photo was taken then, or shortly after. Norma Jeane Dougherty, as Marilyn Monroe was called at this time, posed for Moran in several sessions between 1946 and 1950, usually for photos that Moran would use to paint from.