9 Celebrity Breast Cancer Survivors (SLIDESHOW)

Sheryl Crow was 44 years old when she was diagnosed with breast cancer in 2006 but it was detected early and treated with radiation and surgery. The singer is a staunch advocate of yearly mammograms.

Rancic, 36, found out she had breast cancer this year through a mammogram ordered by her fertility specialist before she continued with her in vitro fertilization treatments. The E! host underwent a lumpectomy in both breasts.

The chief foreign correspondent for NBC News and MSNBC anchor announced in September that she has early-stage breast cancer - discovered during a regular screening - but that her prognosis is "terrific." She is a vocal advocate of every woman getting early, regular screening to reduce their risk.

The Emmy award-winning actress, now starring in "Up All Night," found out in 2008 that she had breast cancer at the age of 36. She also tested positive for the BRAC, or breast cancer gene, so she opted to have a double mastectomy and not risk the cancer coming back.

The "Sex and the City" star was diagnosed with breast cancer in 2006 after a routine mammogram and immediately scheduled a lumpectomy so she wouldn't miss a performance of the Broadway play in which she was performing. She is now an ambassador for Susan G. Komen for the Cure.

This 47-year-old actress-comedian went public with her diagnosis of breast cancer this year; she had a mastectomy earlier this year. The cancer was found after she had a cosmetic procedure for breast-reduction surgery.

The "Good Morning, America" anchor underwent surgery for breast cancer in 2007 at the age of 46 after finding a lump during a self-exam. She believes all the red meat she ate and the sodium-laden canned foods she consumed helped contribute to the disease.

This actress was diagnosed with breast cancer in 2000. In 2009, she wrote a book entitled Knockout, arguing against what she views as the much-used and, in her view, often pointless treatment of chemotherapy.

World tennis champion Martina Navratilova found out she had breast cancer in 2010 - a discovery she called "my 9/11." Currently serving as AARP's Health and Fitness Ambassador, Navratilova turned 55 this week and encourages people to stay fit and healthy, and get early screenings.