Double Oscar winner Hilary Swank is asking women to cut off their hair to help provide wigs for women with cancer.The actress donated her own locks after having her hair chopped off to play aviator Amelia Earheart in a new movie.And now she's backing the Beautiful Lengths campaign to encourage other women to follow suit - and help give hair back to those who lose it when they undergo chemotherapy.Swank says, "One in three women are diagnosed with cancer in their lifetimes. A lot of my family members have had their lives devastated by cancer."You just need to have eight inches (of hair) to donate."

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