(Los Angeles, CA)  --  Actress Angelina Jolie is revealing she has undergone a preventive double mastectomy.  In a "New York Times" op-ed piece, the Oscar winner writes she decided to have the surgery after finding out she is a carrier of the BRCA1 cancer gene.  Jolie says doctors told her she had an 87-percent chance of developing breast cancer.  Her mother battled cancer for nearly ten years and died at the age of 56. 

After three months of medical procedures this year, Jolie says her chances of getting breast cancer are now less than five percent.  She credits her partner, actor Brad Pitt, for his support and for being with her during her surgeries.  Jolie says they both knew it was the right thing to do for their family.  Jolie and Pitt have six children.