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
Nicolas Sarkozy would give Britain the chance to reverse the Brexit vote if he is elected president of France.
Wet and windy in the north tomorrow, bright and warm in the south.
The Democratic presidential told reporters: 'Anybody who complains about the microphone is not having a good night.'