Gwyneth Paltrow

The actress-turned-wellness guru admits she had a "brutal" time at school when she was a teenager.

She said: “I think being a 13-year-old girl sucks no matter what century — no matter what time frame. It was brutal. That was a really hard year for me. I was really trying to grow into this awkward, gawky body, which I think I half grew into. I had braces, and I decided it would be a great idea to shave the back of my head. I think it’s a time in one’s life where you’re trying on different personas and you’re trying to see what kind of a person you’re going to be. I think it’s just also painful.”