Previously unseen images of Marilyn Monroe have been published in a new book, Marilyn: August 1953: The Lost LOOK Photos, which comes out this week.

The pictures were taken over several days when a sprained ankle prevented the Hollywood icon from filming 'River of No Return' with Robert Mitchum in Alberta, Canada in the summer of 1953.

Photographer John Vachon took over 100 shots for a feature in LOOK magazine but only three were published in October of that year.

The digitally restored black and white images include some candid shots of the sex symbol, including one with her then fiancé and baseball star Joe DiMaggio and another of her posing comically with a stuffed grizzly bear.