This is my second pattern I've downsized, and am happy with the fit so far.
The Rebecca Page Emma Top/Dress comes in 18" doll size, which I in turn customized the pattern by reducing it to 60% of its regular size.
The pattern pieces are tiny, but easy enough to work with.
And this top/dress is the perfect Barbie pattern, as it doesn't have to be closely fitted (aka bust to waist) or require a doll version of a full bust adjustment!
I used some scrap rayon/crepe type fabric from a dress that never quite fit me, but seemed perfect for a mini-Emma top!
The sash definitely helps bring the Emma Top into the Barbie Zone, giving her a nice peplum top that happens to match with the skirt Barbie came in!