Yves Klein, Leap Into The Void, 1960
From the Heilbrunn Timeline of Art History:
As in his carefully choreographed paintings in which he used nude female models dipped in blue paint as paintbrushes, Klein’s photomontage paradoxically creates the impression of freedom and abandon through a highly contrived process. In October 1960, the American photographer Harry Shunk made a series of pictures re-creating a jump from a second-floor window that the artist claimed to have executed earlier in the year; the figure and the surrounding scene were then collaged together and rephotographed to create its “documentary” appearance. To complete the illusion that the event had actually taken place, Klein distributed a fake broadsheet at Parisian newsstands commemorating it. It was in this mass-produced form that the artist’s seminal gesture was communicated to the public and also notably to the Vienna Actionists.