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Minnie Driver

LONDON, ENGLAND - JANUARY 24: Minnie Driver attends the European Premiere of 'I Give It A Year' at Vue West End on January 24, 2013 in London, England. (Photo by Mike Marsland/WireImage)

Stars Applaud Angelina Jolie on Twitter

Angelina Jolie's New York Times op-ed about her choice to undergo a double mastectomy to greatly decrease her high risk of breast cancer  has sparked lots of celeb reactions on Twitter, including some from stars who've dealt with breast cancer themselves. Check out what they're saying and join the conversation on Twitter.