The photograph, published on the front cover of Vanity Fair in August, 1991 with the title More Demi Moore, had achieved significant fame and notoriety on publication, and Paramount Pictures chose to parody it in 1993 as part of a promotional campaign for their new film at the time, Naked Gun 33 1/3: The Final Insult.
Paramount's commissioned photograph featured Leslie Nielsen's face superimposed over the body of a pregnant woman, shot and digitally manipulated in such a way as to closely resemble Leibovitz' photograph of Demi Moore.
Paramount ran the ad nationally, and Leibovitz sued for copyright infringement.
Examining the four fair use factors, the court found that although Paramount's photographer drew heavily from Leibovitz' composition, in light of Paramount's parodic purpose and absence of market harm the use of the photograph was a fair use.
These artistic choices on the part of Paramount's designers heighten the parodic effect.