"The Roman Holiday" star's sons have filed a lawsuit in LA Superior Court on the issue, reported Variety.
Luca Dotti, the younger son, is the chairman of Audrey Hepburn Children's Fund.
As per the suit, the elder son, Sean Ferrer has been obstructing the efforts of the charity to display the souvenirs related to the legendary actress.
Both Ferrer and Dotti jointly own Hepburn's effects.
Shortly after her death in the year 1993, they formed the charitable trust and legally agreed to donate proceeds from exhibitions to several children's charities.
In 2012, Ferrer withdrew from the fund's board and Dotti took over as chairman, following which he tried blocking the fund from displaying Hepburn's mementos.
Ferrer could not be reached for a comment.
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