Justice Sandra Day O'Conner

Former U.S. Supreme Court Justice Sandra Day O'Conner was diagnosed with breast cancer in 1988. (credit: Alex Wong/Getty Images)

Kate Jackson

Charlie's Angel Kate Jackson was diagnosed with breast cancer in 1987. (credit: Kevin Winter/Getty Images)

Peter Criss

KISS' founding drummer Peter Criss discovered a lump in his left nipple and had it removed in 2008. After a subsequent surgery, he was declared cancer free. (credit: Bryan Bedder/Getty Images)

Richard Roundtree

Actor Richard Roundtree was diagnosed in 1993 with breast cancer and underwent radical mastectomy and rounds of chemotherapy. (credit: GABRIEL BOUYS/AFP/Getty Images)

Nancy Reagan

(credit: KAREN BLEIER/AFP/Getty Images)

Former US First Lady Nancy Reagan was diagnosed with breast cancer in 1987 from a routine mammogram. (credit: KAREN BLEIER/AFP/Getty Images)

Lynn Redgrave

Lynn Redgrave was diagnosed with breast cancer in 2002. (credit: Teresa Barbieri/Getty Images)

Suzanne Somers

Suzanne Somers went public with her breast cancer battle on Larry King Live. She was diagnosed in 2001. (credit: Andrew H. Walker/Getty Images)

Cynthia Nixon

"Sex and the City" star Cynthia Nixon underwent lumpectomy and radiation treatment in 2006 and went public with her recovery two years later. (credit: MAX NASH/AFP/Getty Images)

Melissa Etheridge

Melissa Etheridge was diagnosed with breast cancer in 2004. (credit: Jemal Countess/Getty Images)

Sheryl Crow

(credit: Bryan Bedder/Getty Images)

Christina Applegate

Christina Applegate went public in 2008 about her breast cancer battle. (credit: ROBYN BECK/AFP/Getty Images)

Olivia Newton John

Olivia Newton- ohn was diagnosed in 1992, underwent a mastectomy and breast reconstruction. (credit: Jason Merritt/Getty Images)

Elizabeth Edwards

Elizabeth Edwards, wife of John Edwards, was diagnosed in 2004. (credit: Frederick M. Brown/Getty Images)

Jaclyn Smith

Former Charlie's Angel and designer Jaclyn Smith is one of two Angels who battled breast cancer. (credit: Chelsea Lauren/Getty Images)

Edie Falco

Edie Falco learned she had the disease in 2003 and announced her diagnosis only after receiving treatment. (credit: Neilson Barnard/Getty Images)

Kylie Minogue

Pop singer Kylie Minogue was diagnosed with breast cancer in May 2005. (credit: Vittorio Zunino Celotto/Getty Images)