Gracing the cover of the September issue of Marie Claire, the 22-year-old told the magazine, which People obtained early: "From the time I was 11, it was, 'You're a pop star! That means you have to be blonde, and you have to have long hair, and you have to put on some glittery tight thing.' Meanwhile, I'm this fragile little girl playing a 16-year-old in a wig and a ton of makeup. It was like Toddlers & Tiaras. ... I was made to look like someone that I wasn't, which probably caused some body dysmorphia, because I had been made pretty every day for so long, and then when I wasn't on that show, it was like, 'Who the f--- am I?'"
Cyrus, who grew up on the series which aired from 2006-11, continued, "I would have anxiety attacks. I'd get hot flashes, feel like I was about to pass out or throw up. It would happen a lot before shows, and I'd have to cancel. Then the anxiety started coming from anxiety."
Check out more from Cyrus' interview, including why she doesn't love Taylor Swift's "Bad Blood" video, here and in the video below.
The September issue of Marie Claire hits newsstands on Aug. 18.