Modeling

Is it possible to like approach a modeling agency for a job or do they have to notice you? I don't know how qualified I am cause I'm not super cute (5'9", 110 lbs, little boobs, bubble butt :)). But I've always liked the idea of modeling. I know some brands like Aerie support all body types and maybe wouldn't have a problem with my little boobs. But I really just don't know anything about modeling (or getting a job tbh, I'm 15) so if anyone has any info that would be great ✨