I don't really believe in any fashion rules. I think fashion is a form of self-expression. I think you can wear whatever you want!
The best fashion advice I'd say would be just to do what makes you comfortable and what makes you feel cute, and that's how you're gonna look your best cause when you feel your best, everybody else can feel it, too.
I was never comfortable because I was always trying to wear what was trendy, but it never felt right on my body or in my skin. It felt wrong. I was finally like, hey, fashion and style can be just about self-expresession, about what makes you feel stylish.