When Megan Shone tweeted her grandma's Facebook status...
...it got nearly 12,000 retweets. And a whole lot of love.
So BuzzFeed News got in touch with Rosemary to find out a little more. She said:
I'm 71 and I live in San Jose, California. I was diagnosed two years ago and have been off and on chemo ever since. I am feeling pretty good right now. I am an addicted knitter and when I saw a pattern for a wig, I thought it would be a hoot to make one. I am a volunteer coach for The First Tee and LPGA Girl's Golf and we had a crazy hair Halloween event. I thought the kids would love it.
Being a rabid Giants fan, I added the hat. They loved it. I have chemo on 29 October and I am planning on wearing it and passing out candy in the infusion ward. Cancer is a real bitch, but I just live with this unwanted guest and live each day fully. I have great family and friends.