Sex and the City actress Cynthia Nixon has gone public with her breast cancer struggle. Cynthia Nixon Nixon told Good Morning America this week she had a lumpectomy two years ago, then underwent six and a half weeks of radiation. She also helped her mother battle breast cancer. She said she didn't want to make her cancer treatment public while she was going through it. "I didn't want paparazzi at the hospital," she explained. Nixon, who came out as lesbian in 2004 following a split from her husband, has joined forces with the breast cancer organization Susan G. Komen for the Cure. She will serve as an ambassador for the organization and will share her cancer experiences in a series of Web videos. "As the daughter of a breast cancer survivor, knowing my personal risk made me more aware and more empowered when I faced my own diagnosis," the 42-year-old actress said in a statement. "I want to help Susan G. Komen for the Cure educate the 1.1 million women around the globe who face a diagnosis each year." Cynthia Nixon shares her experiences of breast cancer on the video shown below.