The 17-year-old singer said she isn't sure people will care about her music when she grows up, reported Contactmusic.
"Since I started making music, a lot was made of how old I was and it made me think about, what happens when I'm 25? Will people still like what I'm doing? Will it still be important if I'm not this hyper-youthful being?
"It's stupid, I know I'm being silly, but I can't help it. It's just one of those things. I'll get over it," she said.
"I am a young person and I know how it feels to have those pressures of not looking a certain way. A lot of people have misconceptions about this industry and how you're supposed to look. I don't think I should have to look perfect all the time.
"I definitely think about the imprint I'm leaving on people my age - particularly girls. I'm sensitive to how women are portrayed because sometimes it kind of sucks.