LOS ANGELES —
She is anything but private in the details she provides, giving a description of the procedures.
"My own process began on Feb. 2 with a procedure known as a 'nipple delay,'" she writes, "which rules out disease in the breast ducts behind the nipple and draws extra blood flow to the area."
She then describes the major surgery two weeks later where breast tissue was removed, saying it felt "like a scene out of a science-fiction film," then writes that nine weeks later she had a third surgery to reconstruct the breasts and receive implants."
Many women have chosen preventive mastectomy since genetic screening for breast cancer was developed, but the move and public announcement is unprecedented from a star so young and widely known as Jolie.
She briefly addresses the effects of the surgery on the idealized sexuality and iconic womanhood that have fueled her fame.
"I do not feel any less of a woman," Jolie writes. "I feel empowered that I made a strong choice that in no way diminishes my femininity."
She also wrote that Brad Pitt, her partner of eight years, was at the Pink Lotus Breast Center in Southern California for "every minute of the surgeries."
Bertrand, Jolie's mother, died in January 2007. She had small roles in the movies "Lookin' to Get Out" in 1982 and "The Man Who Loved Women" in 1983. She raised Jolie and her brother after divorcing their father, Oscar-winning actor Jon Voight, when Jolie was a toddler.
Jolie has appeared in dozens of films including 2010's "The Tourist" and "Salt," the "Tomb Raider" films and 1999's "Girl, Interrupted," for which she won an Oscar.
But she has appeared more often in the news in recent years for her relationship with Pitt and her charitable work with refugees as a United Nations ambassador.
Meanwhile, CNN anchor Zoraida Sambolin announced Tuesday that she has breast cancer and is getting a double mastectomy.
Sambolin, who anchors CNN's "Early Start" morning show, talked about her condition on the show Tuesday while discussing Jolie's decision.