The "Charmed" star was being honoured by the American Cancer Society on Saturday night, with her friend Sarah Michelle Gellar presenting her with their Courage Award, reported Contactmusic.
Welcoming Doherty to the stage Gellar said: "She has alway s been a courageous person but over the last year she has become a one-woman army. Fearless yet full of heart, crushing cancer like a slayer - takes one to know one.
"In an age when celebrities are afraid to walk out of the house without make up, Shannen is proudly displaying her shaved head, telling the world if this can happen to me, it can happen to anyone," Gellar added.
"I'm feeling ridiculously lucky and very blessed. Cancer has changed my life for the better. It's made me a better human being. It stripped away all of the walls and the barriers.
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