In the defiant pop track, Lindemann, 18, blasts haters and affirms that she’s more than her appearance.

“‘Pretty Girl’ was inspired by my experiences growing up on social media and being constantly judged and underestimated based on the superficial, which is something I think a lot of girls are going through right now,” she told PEOPLE exclusively. “Being on the set of ‘Pretty Girl’ with all of the amazing girls was so much fun, just hanging out and getting into trouble. We had a good time, and I think it shows, especially in the shots outside where we got to be a bit sassier.”

The Texas native began singing in the church choir at age 4. Then, in junior high school, she began uploading videos of herself singing to the social media app KEEK, where she garnered a passionate fan-base. A music exec discovered her on YouTube and she moved to L.A. to pursue a singing career soon after.

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