The photographs, which show the former First Lady walking casually along a beach in Skorpios, Greece without a scrap of clothing, were part of a widespread smear campaign by her husband, Greek tycoon Aristotle 'Ari' Onassis, the book claims.
Jackie had married Ari in 1968 after he wooed her with gifts and declarations of love - even though her family and friends were never convinced he was the right match for her.