What did Kylie Jenner do to straighten her smile?

I have a very asymmetrical smile. I think it is do to the one toothe on the side that is pushed in behind the teeth around it. I'm thinking getting braces and straighten my teethe would fix it but Kylie Jenner had an asymmetrical smile but w/t straight teeth And her smile now is a lot more symmetrical. She never had braces and her teeth were already pretty straight, so what did she do to get her smile straight like that? She had lip fillers so could that be it? I really want a symmetrical smile.