I almost didn’t catch this! Joan attended the annual Michael J. Fox Foundation’s “A Funny Thing Happened on the Way to Fight Parkinson’s” benefit in New York on Saturday, November 9. I only found Getty Images of Joan on the red carpet–nothing from inside the event, and it doesn’t look like she performed this time.

Joan with Michael J. Fox and Tracy Pollan.

From The Hollywood Reporter on November 10:

Michael J. Fox’s famous friends dressed up and stepped out for a good cause Saturday night, supporting his Parkinson’s foundation at its annual benefit at New York’s Waldorf-Astoria.

The Denis Leary-hosted event featured a performance from Coldplay’s Chris Martin, accompanied by Fox on guitar, and was attended by Blake Lively and Ryan Reynolds, Julianna Margulies, Joan Jett, Mario Batali, Seth Meyers, Tina Fey and rival morning-show anchors George Stephanopoulos, of Good Morning America, and Today’s Savannah Guthrie and Willie Geist.
…
Jett explained that her involvement was due to her close friendship with Fox.

“Michael J. Fox is a good friend of mine, and once I found out that he had this and he was doing something about it, I wanted to do whatever I could to help. And if me coming here helps, I’ll be here every year,” she said.

See all the pics from the 2013 events at Getty Images HERE.

And here’s a pic of Joan jamming with Michael during the 2011 event. See more pics of Joan at the 2013, 2011, and 2003 events at Getty Images HERE.