From Inside Edition.

Mary Sickler took the state at the Miss USA Pageant with dark, voluminous hair. But just moments later, Mary, who is Miss Nevada, appeared in the preliminary evening gown competition looking very different. Her long hair was gone, replaced by a bejeweled head covering. The 22-year-old has alopecia, an autoimmune condition that causes hair loss. She only started losing her hair 10 months ago, and now Mary’s secret is officially out.