Sarah Michelle Gellar Opens Up About Shannen Doherty's 'Brave' Battle with Cancer

Sarah Michelle Gellar attends a book signing on Tuesday (April 4) at Barnes & Noble in New York City.

The 39-year-old actress attended the book signing where she promoted her new cookbook Stirring Up Fun With Food.

PHOTOS: Check out the latest pics of Sarah Michelle Gellar

While she promoted the book, Sarah opened up about her close friendship with Shannen Doherty and how she’s handled her battle with cancer.

“What she’s done for other women going through it is … so brave, and that’s what real bravery is, is to go through the hardest part of your life and show people, it’s OK to be scared. And it’s OK to be vulnerable, and you can do it,” Sarah told Entertainment Tonight.

Also pictured inside: Sarah Michelle Gellar hitting the streets of NYC on Monday morning (April 3).

FYI: SMGa is wearing an H&M top.