Hi, first of all, I am assuming that the teeth and gums are healthy, if the tooth has recently moved into this position, there may be a gum or tooth issue. I would firstly recommend braces, it just seems like one tooth is a little out, you could have a brace on the front 6 teeth, on the inside, or outside, and it would probably just take a few months to correct. I would definitely do this, as differences in the symettry of the front two teeth are very obvious. A slightly crooked chin is hardly noticable as all! The other option is veneers, possibly two. There will definitely be some tooth reduction, which is why my first choice is the braces. I hope this helps!