Sinead O'Connor

Late musician Sinead O'Connor famously shaved her head when she was 20 years old in a protest against gender standards.

During an interview with Dr. Phil on his TV show, Sinead explained why she "didn't want to be pretty."

She said: "When we were children, my sister had beautiful red hair, glorious red hair. That's why I'd be jealous of her. But my mother took it into her head that my sister's hair was ugly, and horrible and disgusting. And she started, when I had long hair, she would introduce us as her pretty daughter and her ugly daughter.

"And that's why I cut my hair off. I didn't want to be pretty."