I know someone who moved to the US and they wanted to do this.
I think it probably involves wearing some sort of retainer at night indefinitely.
However, our teeth move forwards throughout our life so something that was not a problem may become one as time goes on.
I would say it is worth seeing someone and finding out what it involves and what the options are.
I remember a few older relatives (most of them did not have their own teeth, so in fact it is probably only the one

) having wonky teeth that became very strangely arranged and must have been quite a problem to keep clean.