Chrystalla Spire told ITV News she, "couldn't be more pleased, " that Sharon Osbourne had spoken about her double mastectomy.
She said; "it's a tremendous fillip to this area which is still overcome by taboo."
Ms Spire founded and runs a group to support women who have been through similar experiences.
Speaking about her own decision to have a double mastectomy she said, "it was a very easy decision to make, I discussed it with my daughters. And we really didn't take very long to make the decision and it was one that I was always very pleased I had made.
More top news
Stephen Fry has quit Instagram, telling fans he has been "hounded off" the social media site.
The Office star Martin Freeman has given his backing to Labour in the party's first party election broadcast in England.
Today's weather will remain unsettled, with some cold, wet and windy conditions.