Kellie Pickler is a fully committed cancer buddy.
The 26-year-old country music singer recently shaved her head in support of her best friend, Summer Holt Miller, 35, who was diagnosed with breast cancer in June.
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Pickler sat down on Ellen DeGeneres' show Friday and opened up about her decision to go bald with her friend.
"It's just hair!" she said. "I will be honest with you, I was a little nervous and she was too. [We thought], 'I hope we don't have some crazy birthmark or wart or mole or something . . . but we had fun."
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The singer revealed that her grandmother passed away from cancer the "very next morning after being diagnosed." Pickler wanted to be there through chemotherapy with Miller.
"When Summer was diagnosed with breast cancer back in June we made a pact that we'd shave our heads together," she said. "I think it's important to have a cancer buddy."
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Miller started chemo last week and Pickler said she's "doing good."
"Of course, it's hard," she added. "It's hard on your body, it's hard on your mind. It's not an easy thing to go through. But she's a strong woman and she's handled it with such grace."