Sarah Michelle Gellar commemorated International Breast Cancer Day by spending time with her friend, Shannen Doherty.
The actresses both shared the same photo of one another posing with Dr. Lawrence Piro, Doherty's doctor, along with heartfelt messages. "Today is recognized as #internationalbreastcancerday, although for some people, that is every day. I am only a footnote in this picture. To my left is the @theshando, my friend who is kicking cancer in the you know what," Gellar wrote. "But more than that, she is sharing her battle, so people fighting this horrible disease know they are not alone. I am inspired by her on the daily."
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Both ladies encouraged in their captions for women to get checked out regularly so that breast cancer can be detected earlier on. "It's so important when battling a disease like cancer to have friends like @sarahmgellar," Doherty wrote. "Thank you for always having my back and educating all about this disease. Love you."
In an emotional interview with ET in July, Doherty opened up about how's she's coping as she battles the disease. "I don't look past today," she said. "I want to believe that if I fight, I'm gonna be OK."
WATCH: Sarah Michelle Gellar Shares Touching Tribute to 'Brave Friend' Shannen Doherty
"The unknown is always the scariest part," she added. "Is the chemo going to work? Is the radiation going to work? You know, am I going to have to go through this again, or am I going to get secondary cancer? Everything else is manageable. Pain is manageable, you know living without a breast is manageable, it's the worry of your future and how your future is going to affect the people that you love."