Kate Middleton‘s shocking announcement ended with a message of support for all those affected by cancer … and seemingly inspired one such person to speak out.

Actress Gina Bellman — best known for her role as Sophie Devereaux on the series “Leverage” — posted a message of support to X for the Princess of Wales a little over an hour after Kate’s video shocked the world.

And, minutes after her first tweet applauding KM’s bravery … Bellman told her followers about her own cancer diagnosis.

In her second tweet, Gina wrote, “I myself underwent treatment for Breast Cancer last summer. Until now- I didn’t have the courage to go public. 8 months on I’m back in stilettos and filming 14 hour days. For those undergoing treatment right now- there is light at the end of this tunnel.”

It just goes to show how influential Kate’s announcement video is turning out to be … ’cause it’s got a ton of other stars affected by cancer speaking out too.

Olivia Munn — who revealed earlier this month that she’d been diagnosed with breast cancer — sent Kate a message of support … and, we spoke with Nicole Eggert who sympathized with Kate’s plight and offered some advice.

Basically, Kate’s started a real dialogue around cancer … and, while she’s dealing with her own recovery — it appears she’s helping a whole lot of people make progress in their journeys as well.

BTW … William and Kate have since put out a statement thanking the world for its support in the aftermath of the reveal — and for respecting their privacy.