The country cutie that almost made it into the Top 5 on "American Idol" in Season 5 -- she finished sixth -- has cut off all her hair. In fact, Kellie Pickler shaved her head. But it wasn't because she was having some sort of nervous breakdown. She did it with and in support of her best friend, with "Good Morning America" cameras rolling.

Pickler's friend, 36-year-old Summer Holt Miller, was diagnosed with breast cancer and underwent a double mastectomy in June. Miller was scheduled to begin chemotherapy this week. The "Tough" singer wanted to show some solidarity for her "sister," whom she's known since childhood. She, along with her friend, wanted to try to spread awareness and the importance of early breast cancer diagnosis.