Brooke Korine Miller looked in the mirror and didn’t recognize herself. She had never expected to have breast cancer at 25. The model, actress and, by her own admission, “a little bit of a hypochondriac” says it was her vigilance that led to finding the small lump. While she was fortunate enough to have the resources to save most of her hair and buy new skincare products and makeup “to feel a little bit pretty,” not every woman does. That’s why …