Hilary Swank is lending her support to the Saks Fifth Avenue Key To The Cure campaign.

With celebrity supporters including Nicole Kidman and Charlize Theron, the campaign seeks to promote early detection of cancer.

To support the cause, the Million Dollar Baby actress appears in a national public service announcement wearing a limited edition t-shirt created by Diane von Furstenberg featuring Swarovski crystals especially for the benefit of the campaign.

Swank said in a statement: "I'm thrilled to be able to join the Entertainment Industry Foundation and Saks Fifth Avenue to bring attention the importance of early detection of breast and other women's cancers.

"I hope everyone will buy a Key To The Cure t-shirt to help this very promising scientific research being funded through EIF's Women's Cancer Research Fund."