I finished the first of the miniature Barbie dresses last night. This girl also got some red lipstick and red shoes to match her dress, because the dress itself is so fragile, she likely won't be changing clothes too often.
I think this fabric would be called Chiffon. It's very sheer and frays so easily, that it probably wasn't the best choice for my first piece of scale dollhouse doll clothing. It was actually a vintage handkerchief, but the intended purpose wouldn't be good for that because it isn't anything like Cotton, or even Silk. I thought the pattern was nice for the dress though, and am happy in the end that I did start with something more difficult to work with.
The dresses (and other clothing), should be much easier with Cotton or Silk. This dress will only fit the miniature Barbies because they're more slender than the dollhouse dolls. I made the dress to be removable, but it's likely to be this doll's permanant clothing anyway.