What a wonderful sister! Kathy Griffin debuted a newly shaved head via social media on Monday, July 31. The 56-year-old comedian went bald to support her sister, Joyce Griffin, who is currently undergoing chemotherapy while battling cancer.

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The new photos of Kathy were shared by Yashar Ali on Twitter. In one pic, Kathy can be seen posing with her hand atop her newly shaved head. In another, the star sits next to her mother as Maggie Griffin looks at the camera in surprise over her daughter’s daring new look. Watch the video below to see the pics of Kathy with a bald head!

Later on Monday, proud mom Maggie took to her Twitter account to praise her daughter for going bald to support her sister. “My daughter Kathleen Mary is a wonderful human being,” she wrote. So sweet!

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It is not clear at this time what type of cancer Kathy’s sister, Joyce, is battling. This sadly isn’t the first time the Griffin family has been affected by cancer. Kathy’s older brother Gary Griffin tragically died at age 63 in 2014 after a two-year battle with stage-four esophageal cancer.