Perhaps I misunderstood Bobyoungbait's post, but I thought he was saying that some USians (v. themians?) use both I've got and I've gotten.

There's no problem about the difference between I've gotten heavier and I got heavier,as cited by Hyla. That's just the normal difference between past simple and present perfect. The past signifies that we're talking solely about the past and the present is not a concern while the present perfect signifies a present effect.

For those USians who do use both forms (I've gotten and I've got), what's the difference?

Bingley

Bingley