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
Labour leadership contender Owen Smith has called his rival Jeremy Corbyn a "lunatic" at a rally.
A 6.2 magnitude earthquake has left at least 10 people dead and caused destruction in central Italy.
Airstrikes were launched into Syria and tanks reportedly sent in as Turkey targets militants threatening its border.